Military history of the United States
Encyclopedia
The military history of the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

spans a period of over two centuries. During the course of those years, the United States evolved from a new nation fighting the British Empire
British Empire
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

 for independence without a professional military (1775–1783), through a monumental American Civil War
American Civil War
The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

 (1861–65) to the world's sole remaining superpower
Superpower
A superpower is a state with a dominant position in the international system which has the ability to influence events and its own interests and project power on a worldwide scale to protect those interests...

 of the late 20th century and early 21st century.

Overview

The Continental Congress in 1775 created the Continental Army
Continental Army
The Continental Army was formed after the outbreak of the American Revolutionary War by the colonies that became the United States of America. Established by a resolution of the Continental Congress on June 14, 1775, it was created to coordinate the military efforts of the Thirteen Colonies in...

 and named General George Washington
George Washington
George Washington was the dominant military and political leader of the new United States of America from 1775 to 1799. He led the American victory over Great Britain in the American Revolutionary War as commander-in-chief of the Continental Army from 1775 to 1783, and presided over the writing of...

 its commander. This newly formed army, along with state militia forces, and the French army and navy, defeated the British in 1783. The new Constitution in 1788 made the president the commander in chief, with authority for the Congress
United States Congress
The United States Congress is the bicameral legislature of the federal government of the United States, consisting of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C....

 to levy taxes, and make the rules.

As of 2011, the U.S. military consists of an Army
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

, Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

, Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

 and Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 under the command of the United States Department of Defense
United States Department of Defense
The United States Department of Defense is the U.S...

. There also is the United States Coast Guard
United States Coast Guard
The United States Coast Guard is a branch of the United States Armed Forces and one of the seven U.S. uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the military branches for having a maritime law enforcement mission and a federal regulatory agency...

, which is controlled by the Department of Homeland Security.

The President of the United States
President of the United States
The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 is the commander in chief of each branch of the armed forces. In addition, each state has a national guard
United States National Guard
The National Guard of the United States is a reserve military force composed of state National Guard militia members or units under federally recognized active or inactive armed force service for the United States. Militia members are citizen soldiers, meaning they work part time for the National...

 commanded by the state's governor
Governor
A governor is a governing official, usually the executive of a non-sovereign level of government, ranking under the head of state...

 and coordinated by the National Guard Bureau. The President of the United States has the authority during national emergencies to assume control of individual state National Guard units.

Colonial wars (1620–1774)

The beginning of the United States military lies in civilian frontiersmen, armed for hunting and basic survival in the wilderness. These were organized into local militias for small military operations, mostly against Native American
Native Americans in the United States
Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

 tribes but also to resist possible raids by the small military forces of neighboring European colonies. They relied on the British regular army and navy for any serious military operation.

In major operations outside the locality involved, the militia was not employed as a fighting force. Instead the colony asked for (and paid) volunteers, many of whom were also militia members.
In the early years of the British colonization of North America, military action in the thirteen colonies that would become the United States were the result of conflicts with Native Americans, such as in the Pequot War
Pequot War
The Pequot War was an armed conflict between 1634–1638 between the Pequot tribe against an alliance of the Massachusetts Bay, Plymouth, and Saybrook colonies who were aided by their Native American allies . Hundreds were killed; hundreds more were captured and sold into slavery to the West Indies. ...

 of 1637, King Philip's War
King Philip's War
King Philip's War, sometimes called Metacom's War, Metacomet's War, or Metacom's Rebellion, was an armed conflict between Native American inhabitants of present-day southern New England and English colonists and their Native American allies in 1675–76. The war is named after the main leader of the...

 in 1675, the Yamasee War
Yamasee War
The Yamasee War was a conflict between British settlers of colonial South Carolina and various Native American Indian tribes, including the Yamasee, Muscogee, Cherokee, Chickasaw, Catawba, Apalachee, Apalachicola, Yuchi, Savannah River Shawnee, Congaree, Waxhaw, Pee Dee, Cape Fear, Cheraw, and...

 in 1715 and Dummer's War
Dummer's War
Dummer's War , also known as Lovewell's War, Father Rale's War, Greylock's War, the Three Years War, the 4th Indian War or the Wabanaki-New England War of 1722–1725, was a series of battles between British settlers of the three northernmost British colonies of North America of the time and the...

 in 1722.

Beginning in 1689, the colonies became involved in a series of wars
French and Indian Wars
The French and Indian Wars is a name used in the United States for a series of conflicts lasting 74 years in North America that represented colonial events related to the European dynastic wars...

 between Great Britain
Kingdom of Great Britain
The former Kingdom of Great Britain, sometimes described as the 'United Kingdom of Great Britain', That the Two Kingdoms of Scotland and England, shall upon the 1st May next ensuing the date hereof, and forever after, be United into One Kingdom by the Name of GREAT BRITAIN. was a sovereign...

 and France for control of North America, the most important of which were Queen Anne's War
Queen Anne's War
Queen Anne's War , as the North American theater of the War of the Spanish Succession was known in the British colonies, was the second in a series of French and Indian Wars fought between France and England, later Great Britain, in North America for control of the continent. The War of the...

, in which the British conquered
Siege of Port Royal (1710)
The Siege of Port Royal , also known as the Conquest of Acadia, was conducted by British regular and provincial forces under the command of Francis Nicholson against a French Acadian garrison under the command of Daniel d'Auger de Subercase, at the Acadian capital, Port Royal...

 French colony Acadia
Acadia
Acadia was the name given to lands in a portion of the French colonial empire of New France, in northeastern North America that included parts of eastern Quebec, the Maritime provinces, and modern-day Maine. At the end of the 16th century, France claimed territory stretching as far south as...

, and the final French and Indian War
French and Indian War
The French and Indian War is the common American name for the war between Great Britain and France in North America from 1754 to 1763. In 1756, the war erupted into the world-wide conflict known as the Seven Years' War and thus came to be regarded as the North American theater of that war...

 (1754–1763) when Britain was victorious over all the French colonies in North America. This final war was to give thousands of colonists, including Virginia colonel George Washington
George Washington
George Washington was the dominant military and political leader of the new United States of America from 1775 to 1799. He led the American victory over Great Britain in the American Revolutionary War as commander-in-chief of the Continental Army from 1775 to 1783, and presided over the writing of...

, military experience which they put to use during the American Revolution
American Revolution
The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free from the British Empire, combining to become the United States of America...

.

War of Independence (1775–1783)

Ongoing political tensions
American Revolution
The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free from the British Empire, combining to become the United States of America...

 between Great Britain
Kingdom of Great Britain
The former Kingdom of Great Britain, sometimes described as the 'United Kingdom of Great Britain', That the Two Kingdoms of Scotland and England, shall upon the 1st May next ensuing the date hereof, and forever after, be United into One Kingdom by the Name of GREAT BRITAIN. was a sovereign...

 and the thirteen colonies
Thirteen Colonies
The Thirteen Colonies were English and later British colonies established on the Atlantic coast of North America between 1607 and 1733. They declared their independence in the American Revolution and formed the United States of America...

 reached a crisis in 1774 when the British placed the province of Massachusetts under martial law after the Patriots protested illegal taxes. While shooting began at Lexington and Concord in 1775, the Continental Congress
Continental Congress
The Continental Congress was a convention of delegates called together from the Thirteen Colonies that became the governing body of the United States during the American Revolution....

 appointed George Washington
George Washington
George Washington was the dominant military and political leader of the new United States of America from 1775 to 1799. He led the American victory over Great Britain in the American Revolutionary War as commander-in-chief of the Continental Army from 1775 to 1783, and presided over the writing of...

 as commander-in-chief of the newly created Continental Army
Continental Army
The Continental Army was formed after the outbreak of the American Revolutionary War by the colonies that became the United States of America. Established by a resolution of the Continental Congress on June 14, 1775, it was created to coordinate the military efforts of the Thirteen Colonies in...

, which was augmented throughout the war by colonial militia
Militia
The term militia is commonly used today to refer to a military force composed of ordinary citizens to provide defense, emergency law enforcement, or paramilitary service, in times of emergency without being paid a regular salary or committed to a fixed term of service. It is a polyseme with...

. General Washington was not the greatest battlefield tactician, but his overall strategy
Fabian strategy
The Fabian strategy is a military strategy where pitched battles and frontal assaults are avoided in favor of wearing down an opponent through a war of attrition and indirection. While avoiding decisive battles, the side employing this strategy harasses its enemy through skirmishes to cause...

 proved to be sound: keep the army intact, wear down British resolve, and avoid decisive battles except to exploit enemy mistakes.
The British, for their part, lacked both a unified command and a clear strategy for winning. With the use of the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

, the British were able to capture coastal cities, but control of the countryside eluded them. A British invasion from Canada
Saratoga campaign
The Saratoga Campaign was an attempt by Great Britain to gain military control of the strategically important Hudson River valley in 1777 during the American Revolutionary War...

 in 1777 ended with the disastrous surrender of a British army at Saratoga
Battle of Saratoga
The Battles of Saratoga conclusively decided the fate of British General John Burgoyne's army in the American War of Independence and are generally regarded as a turning point in the war. The battles were fought eighteen days apart on the same ground, south of Saratoga, New York...

. With the coming in 1777 of General von Steuben
Friedrich Wilhelm von Steuben
Friedrich Wilhelm August Heinrich Ferdinand von Steuben , also referred to as the Baron von Steuben, was a Prussian-born military officer who served as inspector general and Major General of the Continental Army during the American Revolutionary War...

, the training and discipline along Prussian lines began, and the Continental Army became a modern force. France and Spain then entered the war against Great Britain, ending its naval advantage and creating a world war.

A shift in focus to the southern American states
Southern theater of the American Revolutionary War
The Southern theater of the American Revolutionary War was the central area of operations in North America in the second half of the American Revolutionary War. During the first three years of the conflict, the primary military encounters had been in the north, focused on campaigns around the...

 resulted in a string of victories for the British, but guerrilla warfare
Guerrilla warfare
Guerrilla warfare is a form of irregular warfare and refers to conflicts in which a small group of combatants including, but not limited to, armed civilians use military tactics, such as ambushes, sabotage, raids, the element of surprise, and extraordinary mobility to harass a larger and...

 and the tenacity of General Nathanael Greene
Nathanael Greene
Nathanael Greene was a major general of the Continental Army in the American Revolutionary War. When the war began, Greene was a militia private, the lowest rank possible; he emerged from the war with a reputation as George Washington's most gifted and dependable officer. Many places in the United...

's army prevented the British from making strategic headway. The main British army was surrounded by Washington's American and French forces at Yorktown
Siege of Yorktown
The Siege of Yorktown, Battle of Yorktown, or Surrender of Yorktown in 1781 was a decisive victory by a combined assault of American forces led by General George Washington and French forces led by the Comte de Rochambeau over a British Army commanded by Lieutenant General Lord Cornwallis...

 in 1781, as the French fleet blocked a rescue by the Royal Navy. The American victory forced the British to sue for peace.

General George Washington
George Washington
George Washington was the dominant military and political leader of the new United States of America from 1775 to 1799. He led the American victory over Great Britain in the American Revolutionary War as commander-in-chief of the Continental Army from 1775 to 1783, and presided over the writing of...

 (1732–1799) proved an excellent organizer and administrator, who worked successfully with Congress and the state governors, selecting and mentoring his senior officers, supporting and training his troops, and maintaining an idealistic Republican Army. His biggest challenge was logistics, since neither Congress nor the states had the funding to provide adequately for the equipment, munitions, clothing, paychecks, or even the food supply of the soldiers. As a battlefield tactician Washington was often outmaneuvered by his British counterparts. As a strategist, however, he had a better idea of how to win the war than they did. The British sent four invasion armies. Washington's strategy forced the first army out of Boston in 1776, and was responsible for the surrender of the second and third armies at Saratoga (1777) and Yorktown (1781). He limited the British control to New York and a few places while keeping Patriot control of the great majority of the population. The Loyalists, whom the British counted upon too heavily, comprised about 20% of the population but never were well organized. As the war ended, Washington watched proudly as the final British army quietly sailed out of New York City in November 1783, taking the Loyalist leadership with them. Washington astonished the world when instead of seizing power for himself, he retired quietly to his farm in Virginia.

Since many Americans of the revolutionary generation had strong distrust of permanent (or "standing
Standing army
A standing army is a professional permanent army. It is composed of full-time career soldiers and is not disbanded during times of peace. It differs from army reserves, who are activated only during wars or natural disasters...

") armies, the Continental Army was quickly disbanded after the Revolution. General Washington, who throughout the war deferred to elected officials, averted a potential crisis
Newburgh conspiracy
The Newburgh Conspiracy was unrest in 1783 among officers of the American Continental Army due to many officers and men of the Army not receiving pay for many years. Commander-in-Chief George Washington stopped any serious talk by appealing successfully to his officers to support the supremacy of...

 and resigned as commander-in-chief to Congress after the war, establishing a tradition of civil control of the U.S. military.

Early national period (1783–1812)

Following the American Revolution
American Revolution
The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free from the British Empire, combining to become the United States of America...

, the United States faced potential military conflict on the high seas as well as on the western frontier
Frontier
A frontier is a political and geographical term referring to areas near or beyond a boundary. 'Frontier' was absorbed into English from French in the 15th century, with the meaning "borderland"--the region of a country that fronts on another country .The use of "frontier" to mean "a region at the...

. The United States was a minor military power during this time, having only a modest army and navy. A traditional distrust of standing armies, combined with faith in the abilities of local militia, precluded the development of well-trained units and a professional officer corps. Jeffersonian leaders preferred a small army and navy, fearing that a large military establishment would involve the United States in excessive foreign wars, and potentially allow a domestic tyrant to seize power.

In the Treaty of Paris
Treaty of Paris (1783)
The Treaty of Paris, signed on September 3, 1783, ended the American Revolutionary War between Great Britain on the one hand and the United States of America and its allies on the other. The other combatant nations, France, Spain and the Dutch Republic had separate agreements; for details of...

 after the Revolution, the British had ceded the lands between the Appalachian Mountains
Appalachian Mountains
The Appalachian Mountains #Whether the stressed vowel is or ,#Whether the "ch" is pronounced as a fricative or an affricate , and#Whether the final vowel is the monophthong or the diphthong .), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians...

 and the Mississippi River
Mississippi River
The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 to the United States, without consulting the Shawnee
Shawnee
The Shawnee, Shaawanwaki, Shaawanooki and Shaawanowi lenaweeki, are an Algonquian-speaking people native to North America. Historically they inhabited the areas of Ohio, Virginia, West Virginia, Western Maryland, Kentucky, Indiana, and Pennsylvania...

, Cherokee
Cherokee
The Cherokee are a Native American people historically settled in the Southeastern United States . Linguistically, they are part of the Iroquoian language family...

, Choctaw
Choctaw
The Choctaw are a Native American people originally from the Southeastern United States...

 and other smaller tribes who lived there. Because many of the tribes had fought as allies of the British, the United States compelled tribal leaders to sign away lands in postwar treaties, and began dividing up these lands
Northwest Ordinance
The Northwest Ordinance was an act of the Congress of the Confederation of the United States, passed July 13, 1787...

 for settlement. This provoked a war
Northwest Indian War
The Northwest Indian War , also known as Little Turtle's War and by various other names, was a war fought between the United States and a confederation of numerous American Indian tribes for control of the Northwest Territory...

 in the Northwest Territory
Northwest Territory
The Territory Northwest of the River Ohio, more commonly known as the Northwest Territory, was an organized incorporated territory of the United States that existed from July 13, 1787, until March 1, 1803, when the southeastern portion of the territory was admitted to the Union as the state of Ohio...

 in which the U.S. forces performed poorly; the Battle of the Wabash
St. Clair's Defeat
St. Clair's Defeat also known as the Battle of the Wabash, the Battle of Wabash River or the Battle of a Thousand Slain, was fought on November 4, 1791 in the Northwest Territory between the United States and the Western Confederacy of American Indians, as part of the Northwest Indian War...

 in 1791 was the most severe defeat ever suffered by the United States at the hands of American Indians. President Washington dispatched a newly trained army
Legion of the United States
The Legion of the United States was a reorganization and extension of the United States Army from 1792 to 1796 under the command of Major General Anthony Wayne.-Origins:The impetus for the Legion came from General Arthur St...

 to the region, which decisively defeated the Indian confederacy at the Battle of Fallen Timbers
Battle of Fallen Timbers
The Battle of Fallen Timbers was the final battle of the Northwest Indian War, a struggle between American Indian tribes affiliated with the Western Confederacy and the United States for control of the Northwest Territory...

 in 1794.

When revolutionary France declared war on Great Britain
French Revolutionary Wars: Campaigns of 1793
The French Revolutionary Wars continued from 1792, with new powers entering the First Coalition after the execution of King Louis XVI. Spain and Portugal entered the coalition in January 1793, and on 1 February France declared war on Great Britain and the Netherlands.At the opening of the year,...

 in 1793, the United States sought to remain neutral, but the Jay Treaty
Jay Treaty
Jay's Treaty, , also known as Jay's Treaty, The British Treaty, and the Treaty of London of 1794, was a treaty between the United States and Great Britain that is credited with averting war,, resolving issues remaining since the Treaty of Paris of 1783, which ended the American Revolution,, and...

, which was favorable to Great Britain, angered the French government, which viewed it as a violation of the 1778 Treaty of Alliance
Treaty of Alliance (1778)
The Treaty of Alliance, also called The Treaty of Alliance with France, was a defensive alliance between France and the United States of America, formed in the midst of the American Revolutionary War, which promised military support in case of attack by British forces indefinitely into the future...

. French privateer
Privateer
A privateer is a private person or ship authorized by a government by letters of marque to attack foreign shipping during wartime. Privateering was a way of mobilizing armed ships and sailors without having to spend public money or commit naval officers...

s began to seize U.S. vessels, which led to an undeclared "Quasi-War
Quasi-War
The Quasi-War was an undeclared war fought mostly at sea between the United States and French Republic from 1798 to 1800. In the United States, the conflict was sometimes also referred to as the Franco-American War, the Pirate Wars, or the Half-War.-Background:The Kingdom of France had been a...

" between the two nations. Fought at sea from 1798 to 1800, the United States won a string of victories in the Caribbean. George Washington was called out of retirement to head a "provisional army" in case of invasion by France, but President John Adams
John Adams
John Adams was an American lawyer, statesman, diplomat and political theorist. A leading champion of independence in 1776, he was the second President of the United States...

 managed to negotiate a truce, in which France agreed to terminate the prior alliance and cease its attacks.

Barbary wars

The Berbers along the Barbary Coast (modern day Libya) sent pirates to capture merchant ships and hold the crews for ransom. The U.S. paid protection money until 1801, when President Thomas Jefferson
Thomas Jefferson
Thomas Jefferson was the principal author of the United States Declaration of Independence and the Statute of Virginia for Religious Freedom , the third President of the United States and founder of the University of Virginia...

 refused to pay and sent in the Navy to challenge the Barbary States, the First Barbary War
First Barbary War
The First Barbary War , also known as the Barbary Coast War or the Tripolitan War, was the first of two wars fought between the United States and the North African Berber Muslim states known collectively as the Barbary States...

 followed. After the U.S.S. Philadelphia
USS Philadelphia (1799)
The second USS Philadelphia was a 1240-ton, 36-gun sailing frigate of the United States Navy.Originally named City of Philadelphia, she was built in 1798–1799 for the United States government by the citizens of Philadelphia, Pennsylvania. Funding for her construction was the result of a...

 was captured in 1803, Lieutenant Stephen Decatur
Stephen Decatur
Stephen Decatur, Jr. , was an American naval officer notable for his many naval victories in the early 19th century. He was born on the eastern shore of Maryland, Worcester county, the son of a U.S. Naval Officer who served during the American Revolution. Shortly after attending college Decatur...

 led a raid which successfully burned the captured ship, preventing Tripoli from using or selling it. In 1805, after William Eaton captured the city of Derna, Tripoli agreed to a peace treaty. The other Barbary states continued to raid U.S. shipping, until the Second Barbary War
Second Barbary War
The Second Barbary War , also known as the Algerine or Algerian War, was the second of two wars fought between the United States and the Ottoman Empire's North African regencies of Tripoli, Tunis, and Algeria known collectively as the Barbary states. The war between the Barbary States and the U.S...

 in 1815 ended the practice.

War of 1812

By far the largest military action in which the United States engaged during this era was the War of 1812
War of 1812
The War of 1812 was a military conflict fought between the forces of the United States of America and those of the British Empire. The Americans declared war in 1812 for several reasons, including trade restrictions because of Britain's ongoing war with France, impressment of American merchant...

. When the United Kingdom and France went to war again in 1803
Napoleonic Wars
The Napoleonic Wars were a series of wars declared against Napoleon's French Empire by opposing coalitions that ran from 1803 to 1815. As a continuation of the wars sparked by the French Revolution of 1789, they revolutionised European armies and played out on an unprecedented scale, mainly due to...

 with renewed vigor, the United States sought to remain neutral while pursuing overseas trade. This proved difficult, and the United States finally declared war on the United Kingdom in 1812, the first time the U.S. had officially declared war. Not hopeful of defeating the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

, the U.S. attacked the British Empire
British Empire
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

 by invading British Canada, hoping to use captured territory as a bargaining chip. The invasion of Canada was a debacle, though concurrent wars with Native Americans on the western front (Tecumseh's War
Tecumseh's War
Tecumseh's War or Tecumseh's Rebellion are terms sometimes used to describe a conflict in the Old Northwest between the United States and an American Indian confederacy led by the Shawnee leader Tecumseh...

 and the Creek War
Creek War
The Creek War , also known as the Red Stick War and the Creek Civil War, began as a civil war within the Creek nation...

) were more successful. After defeating Napoleon
Napoleon I of France
Napoleon Bonaparte was a French military and political leader during the latter stages of the French Revolution.As Napoleon I, he was Emperor of the French from 1804 to 1815...

 in 1814, Britain sent large veteran armies to invade New York, raid Washington and capture the key control of the Mississippi River at New Orleans. The New York invasion was a fiasco after the much larger British army retreated to Canada. The raiders succeeded in burning of Washington
Burning of Washington
The Burning of Washington was an armed conflict during the War of 1812 between the United Kingdom of Great Britain and Ireland and the United States of America. On August 24, 1814, led by General Robert Ross, a British force occupied Washington, D.C. and set fire to many public buildings following...

 on 25 August 1814, but were repulsed in their Chesapeake Bay
Chesapeake Bay
The Chesapeake Bay is the largest estuary in the United States. It lies off the Atlantic Ocean, surrounded by Maryland and Virginia. The Chesapeake Bay's drainage basin covers in the District of Columbia and parts of six states: New York, Pennsylvania, Delaware, Maryland, Virginia, and West...

 Campaign at the Battle of Baltimore
Battle of Baltimore
The Battle of Baltimore was a combined sea/land battle fought between British and American forces in the War of 1812. It was one of the turning points of the war as American forces repulsed sea and land invasions of the busy port city of Baltimore, Maryland, and killed the commander of the invading...

 and the British commander killed. The major invasion in Louisiana was stooped by a one-sided military battle
Battle of New Orleans
The Battle of New Orleans took place on January 8, 1815 and was the final major battle of the War of 1812. American forces, commanded by Major General Andrew Jackson, defeated an invading British Army intent on seizing New Orleans and the vast territory the United States had acquired with the...

 that killed the top three British generals and thousands of soldiers. The winner General Andrew Jackson
Andrew Jackson
Andrew Jackson was the seventh President of the United States . Based in frontier Tennessee, Jackson was a politician and army general who defeated the Creek Indians at the Battle of Horseshoe Bend , and the British at the Battle of New Orleans...

 became president as Americans basked in a victory over a much more powerful nation. The peace treaty proved successful, and the U.S. and Canada never again went to war. The losers were the Indians, who never gained the independent territory in the Midwest promised by Britain.

War with Mexico (1846–48)

With the rapid expansion of the farming population, Democrats looked to the west for new lands, an idea which became known as "Manifest Destiny
Manifest Destiny
Manifest Destiny was the 19th century American belief that the United States was destined to expand across the continent. It was used by Democrat-Republicans in the 1840s to justify the war with Mexico; the concept was denounced by Whigs, and fell into disuse after the mid-19th century.Advocates of...

." In the Texas Revolution
Texas Revolution
The Texas Revolution or Texas War of Independence was an armed conflict between Mexico and settlers in the Texas portion of the Mexican state Coahuila y Tejas. The war lasted from October 2, 1835 to April 21, 1836...

 (1835–36), the settlers declared independence and defeated the Mexican army, but Mexico was determined to reconquer the lost province sooner or later, and threatened war with the U.S. if it annexed Texas. The U.S., much larger and more powerful, did annex Texas in 1845 and war broke out in 1846 over boundary issues.

In the Mexican-American War 1846–48, the U.S. Army under Generals Zachary Taylor
Zachary Taylor
Zachary Taylor was the 12th President of the United States and an American military leader. Initially uninterested in politics, Taylor nonetheless ran as a Whig in the 1848 presidential election, defeating Lewis Cass...

 and Winfield Scott
Winfield Scott
Winfield Scott was a United States Army general, and unsuccessful presidential candidate of the Whig Party in 1852....

 and others, invaded and after a series of victorious battles (and no major defeats) seized New Mexico and California, and also blockaded the coast, invaded northern Mexico, and invaded central Mexico, capturing the national capital. The peace terms involved American purchase of the area from California to New Mexico for $10 million.

American Civil War (1861–1865)

Sectional tensions had long existed between the states located north of the Mason-Dixon Line
Mason-Dixon line
The Mason–Dixon Line was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon in the resolution of a border dispute between British colonies in Colonial America. It forms a demarcation line among four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and...

 and those south of it, primarily centered on the "peculiar institution" of slavery
History of slavery in the United States
Slavery in the United States was a form of slave labor which existed as a legal institution in North America for more than a century before the founding of the United States in 1776, and continued mostly in the South until the passage of the Thirteenth Amendment to the United States Constitution in...

 and the ability of states to overrule the decisions of the national government. During the 1840s and 1850s, conflicts between the two sides became progressively more violent. After the election of Abraham Lincoln in 1860 (who southerners thought would work to end slavery) states in the South seceded
Secession
Secession is the act of withdrawing from an organization, union, or especially a political entity. Threats of secession also can be a strategy for achieving more limited goals.-Secession theory:...

 from the United States, beginning with South Carolina in late 1860. On April 12, 1861, forces of the South (known as the Confederate States of America
Confederate States of America
The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

 or simply the Confederacy) opened fire on Fort Sumter
Fort Sumter
Fort Sumter is a Third System masonry coastal fortification located in Charleston Harbor, South Carolina. The fort is best known as the site upon which the shots initiating the American Civil War were fired, at the Battle of Fort Sumter.- Construction :...

, whose garrison was loyal to the Union.

The American Civil War
American Civil War
The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

caught both sides unprepared. The Confederacy hoped to win by getting Britain and France to intervene, or else by wearing down the North's willingness to fight. The U.S. sought a quick victory focused on capturing the Confederate capital at Richmond, Virginia
Richmond, Virginia
Richmond is the capital of the Commonwealth of Virginia, in the United States. It is an independent city and not part of any county. Richmond is the center of the Richmond Metropolitan Statistical Area and the Greater Richmond area...

. The Confederates under Robert E. Lee
Robert E. Lee
Robert Edward Lee was a career military officer who is best known for having commanded the Confederate Army of Northern Virginia in the American Civil War....

 tenaciously defended their capital until the very end. The war spilled across the continent, and even to the high seas. Most of the material and human resources of the South were used up, while the North prospered.

The American Civil War is sometimes called the "first modern war" due to the mobilization (and destruction) of the civilian base. It also is characterized by many technical innovations involving railroads, telegraphs, rifles, trench warfare
Trench warfare
Trench warfare is a form of occupied fighting lines, consisting largely of trenches, in which troops are largely immune to the enemy's small arms fire and are substantially sheltered from artillery...

, and ironclad warships with turret guns.

Indian Wars (1865–1870)

After the Civil War, population expansion, railroad construction, and the disappearance of the buffalo herds, heightened military tensions on the Great Plains. Several tribes, especially the Sioux and Comanche, fiercely resisted confinement to reservations. The main role of the Army was to keep indigenous peoples on reservations as the United States carried out its plans for economic expansion. William Tecumseh Sherman
William Tecumseh Sherman
William Tecumseh Sherman was an American soldier, businessman, educator and author. He served as a General in the Union Army during the American Civil War , for which he received recognition for his outstanding command of military strategy as well as criticism for the harshness of the "scorched...

 and Philip Sheridan
Philip Sheridan
Philip Henry Sheridan was a career United States Army officer and a Union general in the American Civil War. His career was noted for his rapid rise to major general and his close association with Lt. Gen. Ulysses S...

 were in charge. A great victory for the Plains Nations was the Battle of the Little Big Horn in 1876, when Col. George Armstrong Custer
George Armstrong Custer
George Armstrong Custer was a United States Army officer and cavalry commander in the American Civil War and the Indian Wars. Raised in Michigan and Ohio, Custer was admitted to West Point in 1858, where he graduated last in his class...

 and his regiment were all killed by a force consisting of many nations.

Spanish-American War (1898)

The Spanish-American War
Spanish-American War
The Spanish–American War was a conflict in 1898 between Spain and the United States, effectively the result of American intervention in the ongoing Cuban War of Independence...

 was a short decisive war marked by quick, overwhelming American victories at sea and on land against Spain. The Navy was well prepared and won laurels, even as politicians tried (and failed) to have it redeployed to defend East Coast cities against potential threats from the feeble Spanish fleet. The Army performed well in combat in Cuba. However, it was too oriented to small posts in the West and not as well prepared for an overseas conflict. It relied on volunteers and state militia units, which faced logistical, training and food problems in the staging areas in Florida. The United States freed Cuba (after an occupation by the U.S. Army). By the peace treaty
Treaty of Paris (1898)
The Treaty of Paris of 1898 was signed on December 10, 1898, at the end of the Spanish-American War, and came into effect on April 11, 1899, when the ratifications were exchanged....

 Spain ceded to the United States its colonies of Puerto Rico
Puerto Rico
Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

, Guam
Guam
Guam is an organized, unincorporated territory of the United States located in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Guam is listed as one of 16 Non-Self-Governing Territories by the Special Committee on Decolonization of the United...

, and the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. The Navy set up coaling stations there and in Hawaii (which voluntarily joined the U.S. in 1898). The U.S. Navy now had a major forward presence across the Pacific and (with the lease of Guantánamo Bay Naval Base
Guantanamo Bay Naval Base
Guantanamo Bay Naval Base is located on of land and water at Guantánamo Bay, Cuba which the United States leased for use as a coaling station following the Cuban-American Treaty of 1903. The base is located on the shore of Guantánamo Bay at the southeastern end of Cuba. It is the oldest overseas...

 in Cuba) a major base in the Caribbean guarding the approaches to the Gulf Coast and the Panama Canal.

Philippine-American War (1899–1902)

The Philippine-American War
Philippine-American War
The Philippine–American War, also known as the Philippine War of Independence or the Philippine Insurrection , was an armed conflict between a group of Filipino revolutionaries and the United States which arose from the struggle of the First Philippine Republic to gain independence following...

 (1899–1902), was an armed conflict between a group of Filipino revolutionaries
First Philippine Republic
The Philippine Republic , more commonly known as the First Philippine Republic or the Malolos Republic was a short-lived insurgent revolutionary government in the Philippines...

 and the American forces following the ceding of the Philippines to the United States after the defeat of Spanish forces in the Battle of Manila
Battle of Manila (1898)
The Battle of Manila was a short land engagement between the United States and Spain at the end of the Spanish-American War, which occurred a couple of months after the pivotal American victory during the naval Battle of Manila Bay...

. The Army sent in 100,000 soldiers (mostly from the National Guard) under General Elwell Otis. Defeated in the field and losing its capital in March 1899, the poorly armed and poorly led rebels broke into armed bands. The insurgency collapsed in March 1901 when the leader Emilio Aguinaldo
Emilio Aguinaldo
Emilio Aguinaldo y Famy was a Filipino general, politician, and independence leader. He played an instrumental role during the Philippines' revolution against Spain, and the subsequent Philippine-American War or War of Philippine Independence that resisted American occupation...

 was captured by General Frederick Funston
Frederick Funston
Frederick N. Funston also known as Fred Funston, was a General in the United States Army, best known for his role in the Spanish-American War and the Philippine-American War...

 and his Macabebe
Philippine Scouts
The Philippine Scouts was a military organization of the United States Army from 1901 until the end of World War II. Made up of native Filipinos assigned to the United States Army Philippine Department, these troops were generally enlisted and under the command of American officers, however, a...

 allies. Casualties included 1037 Americans killed in action and 3340 who died from disease; 20,000 rebels were killed.

Modernization

The Navy was modernized in the 1880s, and by the 1890s had adopted the naval power strategy of Captain Alfred Thayer Mahan
Alfred Thayer Mahan
Alfred Thayer Mahan was a United States Navy flag officer, geostrategist, and historian, who has been called "the most important American strategist of the nineteenth century." His concept of "sea power" was based on the idea that countries with greater naval power will have greater worldwide...

--as indeed did every major navy. The old sailing ships were replaced by modern steel battleships, bringing them in line with the navies of Britain and Germany. In 1907, most of the Navy's battleships, with several support vessels, dubbed the Great White Fleet
Great White Fleet
The Great White Fleet was the popular nickname for the United States Navy battle fleet that completed a circumnavigation of the globe from 16 December 1907 to 22 February 1909 by order of U.S. President Theodore Roosevelt. It consisted of 16 battleships divided into two squadrons, along with...

, were showcased in a 14-month circumnavigation of the world. Ordered by President Theodore Roosevelt
Theodore Roosevelt
Theodore "Teddy" Roosevelt was the 26th President of the United States . He is noted for his exuberant personality, range of interests and achievements, and his leadership of the Progressive Movement, as well as his "cowboy" persona and robust masculinity...

, it was a mission designed to demonstrate the Navy's capability to extend to the global theater.

Secretary of War Elihu Root
Elihu Root
Elihu Root was an American lawyer and statesman and the 1912 recipient of the Nobel Peace Prize. He was the prototype of the 20th century "wise man", who shuttled between high-level government positions in Washington, D.C...

 (1899–1904) led the modernization of the Army. His goal of a uniformed chief of staff as general manager and a European-type general staff for planning was stymied by General Nelson A. Miles
Nelson A. Miles
Nelson Appleton Miles was a United States soldier who served in the American Civil War, Indian Wars, and the Spanish-American War.-Early life:Miles was born in Westminster, Massachusetts, on his family's farm...

 but did succeed in enlarging West Point
United States Military Academy
The United States Military Academy at West Point is a four-year coeducational federal service academy located at West Point, New York. The academy sits on scenic high ground overlooking the Hudson River, north of New York City...

 and establishing the U.S. Army War College
U.S. Army War College
The United States Army War College is a United States Army school located in Carlisle, Pennsylvania, on the 500 acre campus of the historic Carlisle Barracks...

 as well as the General Staff. Root changed the procedures for promotions and organized schools for the special branches of the service. He also devised the principle of rotating officers from staff to line. Root was concerned about the Army's role in governing the new territories acquired in 1898 and worked out the procedures for turning Cuba over to the Cubans, and wrote the charter of government for the Philippines.

Rear Admiral Bradley A. Fiske was at the vanguard of new technology in naval guns and gunnery, thanks to his innovations in fire control 1890–1910. He immediately grasped the potential for air power, and called for the development of a torpedo plane. Fiske, as aide for operations in 1913–15 to Assistant Secretary Franklin D. Roosevelt
Franklin D. Roosevelt
Franklin Delano Roosevelt , also known by his initials, FDR, was the 32nd President of the United States and a central figure in world events during the mid-20th century, leading the United States during a time of worldwide economic crisis and world war...

, proposed a radical reorganization of the Navy to make it a war-fighting instrument. Fiske wanted to centralize authority in a chief of naval operations and an expert staff that would develop new strategies, oversee the construction of a larger fleet, coordinate war planning including force structure, mobilization plans, and industrial base, and insure that the US Navy possessed the best possible war machines. Eventually, the Navy adopted his reforms and by 1915 started to reorganize for possible involvement in the World War then underway.

Banana Wars (1898–1935)

The Banana Wars is a term used to describe US intervention in Latin America from the end of the Spanish American War in 1898 until 1935. These wars include involvement in Cuba
Cuba
The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

, Mexico, Panama
Panama
Panama , officially the Republic of Panama , is the southernmost country of Central America. Situated on the isthmus connecting North and South America, it is bordered by Costa Rica to the northwest, Colombia to the southeast, the Caribbean Sea to the north and the Pacific Ocean to the south. The...

 with the Panama Canal Zone
Panama Canal Zone
The Panama Canal Zone was a unorganized U.S. territory located within the Republic of Panama, consisting of the Panama Canal and an area generally extending 5 miles on each side of the centerline, but excluding Panama City and Colón, which otherwise would have been partly within the limits of...

, Haiti
Haiti
Haiti , officially the Republic of Haiti , is a Caribbean country. It occupies the western, smaller portion of the island of Hispaniola, in the Greater Antillean archipelago, which it shares with the Dominican Republic. Ayiti was the indigenous Taíno or Amerindian name for the island...

 (1915–1935), Dominican Republic
Dominican Republic
The Dominican Republic is a nation on the island of La Hispaniola, part of the Greater Antilles archipelago in the Caribbean region. The western third of the island is occupied by the nation of Haiti, making Hispaniola one of two Caribbean islands that are shared by two countries...

 (1916–1924) and Nicaragua
Nicaragua
Nicaragua is the largest country in the Central American American isthmus, bordered by Honduras to the north and Costa Rica to the south. The country is situated between 11 and 14 degrees north of the Equator in the Northern Hemisphere, which places it entirely within the tropics. The Pacific Ocean...

 (1912–1925) & (1926–1933). The U.S. Marine Corps began to specialize in long-term military occupation of these countries.

Most notable of these conflicts was when U.S. forces occupied the Mexican city of Veracruz for over six months in 1914, in response to the April 9, 1914 "Tampico Affair
Tampico Affair
The Tampico Affair started off as a minor incident involving U.S. sailors and Mexican land forces loyal to General Victoriano Huerta during the guerra de las facciones phase of the Mexican Revolution...

", which involved the brief arrest of U.S. sailors by soldiers of the regime of Mexican President Victoriano Huerta
Victoriano Huerta
José Victoriano Huerta Márquez was a Mexican military officer and president of Mexico. Huerta's supporters were known as Huertistas during the Mexican Revolution...

. The incident came in the midst of poor diplomatic relations with the United States, related to the ongoing Mexican Revolution
Mexican Revolution
The Mexican Revolution was a major armed struggle that started in 1910, with an uprising led by Francisco I. Madero against longtime autocrat Porfirio Díaz. The Revolution was characterized by several socialist, liberal, anarchist, populist, and agrarianist movements. Over time the Revolution...

.

Moro Rebellion (1899–1913)

The Moro Rebellion was an armed insurgency between Muslim Filipino
Muslim Filipino
Moro people refers to a population of Muslims in the Philippines, forming the largest non-Christian group in the country, comprising about 5% to 10% of the total Philippine population....

 tribes in the southern Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 between 1899 to 1913. Pacification was never complete as sporadic anti-government insurgency continues into the 21st century, with American advisors helping the Philippine government forces.

World War I (1917–1918)

The United States originally wished to remain neutral when World War I broke out in August 1914. However, it insisted on its right as a neutral party to immunity from German submarine attack. The ships carried food and raw materials to Britain. In 1917 the Germans resumed submarine attacks
Unrestricted submarine warfare
Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchantmen without warning, as opposed to attacks per prize rules...

, knowing that it would lead to American entry. However the U.S. had deliberately kept its army small and mobilization took a year. Meanwhile the U.S. sent more supplies and money to Britain and France, and started the first peacetime draft. Economic mobilization was much slower than expected, so the decision was made to send divisions to Europe without their equipment, relying instead on British and French supplies.

By summer 1918, a million American soldiers, or "doughboy
Doughboy
Doughboy is an informal term for an American soldier, especially members of the American Expeditionary Forces in World War I. The term dates back to the Mexican–American War of 1846–48....

s" as they were often called, of the American Expeditionary Force
American Expeditionary Force
The American Expeditionary Forces or AEF were the United States Armed Forces sent to Europe in World War I. During the United States campaigns in World War I the AEF fought in France alongside British and French allied forces in the last year of the war, against Imperial German forces...

 were in Europe under the command of John J. Pershing
John J. Pershing
John Joseph "Black Jack" Pershing, GCB , was a general officer in the United States Army who led the American Expeditionary Forces in World War I...

, with 25,000 more arriving every week. The failure of Germany's spring offensive meant it had exhausted its manpower reserves and were unable to launch attacks or even defend its lines. Meanwhile, the German home front revolted and a new German government
Weimar Republic
The Weimar Republic is the name given by historians to the parliamentary republic established in 1919 in Germany to replace the imperial form of government...

 signed a conditional surrender, the Armistice
Armistice with Germany (Compiègne)
The armistice between the Allies and Germany was an agreement that ended the fighting in the First World War. It was signed in a railway carriage in Compiègne Forest on 11 November 1918 and marked a victory for the Allies and a complete defeat for Germany, although not technically a surrender...

, ending the war on November 11, 1918.

Russian Revolution

The so-called Polar Bear Expedition
Polar Bear Expedition
The Polar Bear Expedition was a contingent of about 5,000 U.S...

 was the involvement of U.S. troops, during the tail end of World War I and the Russian Revolution
Russian Revolution of 1917
The Russian Revolution is the collective term for a series of revolutions in Russia in 1917, which destroyed the Tsarist autocracy and led to the creation of the Soviet Union. The Tsar was deposed and replaced by a provisional government in the first revolution of February 1917...

, in fighting the Bolshevik
Bolshevik
The Bolsheviks, originally also Bolshevists , derived from bol'shinstvo, "majority") were a faction of the Marxist Russian Social Democratic Labour Party which split apart from the Menshevik faction at the Second Party Congress in 1903....

s in Arkhangelsk
Arkhangelsk
Arkhangelsk , formerly known as Archangel in English, is a city and the administrative center of Arkhangelsk Oblast, Russia. It lies on both banks of the Northern Dvina River near its exit into the White Sea in the north of European Russia. The city spreads for over along the banks of the river...

, Russia in 1918 and 1919.

1920s: Naval disarmanment

The U.S. sponsored a major world conference to limit the naval armaments of world powers, including the U.S., Britain, Japan, and France, plus smaller nations. Secretary of State Charles Evans Hughes
Charles Evans Hughes
Charles Evans Hughes, Sr. was an American statesman, lawyer and Republican politician from New York. He served as the 36th Governor of New York , Associate Justice of the Supreme Court of the United States , United States Secretary of State , a judge on the Court of International Justice , and...

 made the key proposal of each country to reduce its number of warships by a formula that was accepted. The conference enabled the great powers to reduce their navies and avoid conflict in the Pacific. The treaties remained in effect for ten years, but were not renewed as tensions escalated.

1930s: Neutrality Acts

After the costly U.S. involvement in World War I, isolationism
Isolationism
Isolationism is the policy or doctrine of isolating one's country from the affairs of other nations by declining to enter into alliances, foreign economic commitments, international agreements, etc., seeking to devote the entire efforts of one's country to its own advancement and remain at peace by...

 grew within the nation. Congress refused membership in the League of Nations
League of Nations
The League of Nations was an intergovernmental organization founded as a result of the Paris Peace Conference that ended the First World War. It was the first permanent international organization whose principal mission was to maintain world peace...

, and in response to the growing turmoil in Europe and Asia, the gradually more restrictive Neutrality Acts were passed, which were intended to prevent the U.S. from supporting either side in a war. President Franklin D. Roosevelt
Franklin D. Roosevelt
Franklin Delano Roosevelt , also known by his initials, FDR, was the 32nd President of the United States and a central figure in world events during the mid-20th century, leading the United States during a time of worldwide economic crisis and world war...

 sought to support Britain, however, and in 1940 signed the Lend-Lease
Lend-Lease
Lend-Lease was the program under which the United States of America supplied the United Kingdom, the Soviet Union, China, Free France, and other Allied nations with materiel between 1941 and 1945. It was signed into law on March 11, 1941, a year and a half after the outbreak of war in Europe in...

 Act, which permitted an expansion of the "cash and carry" arms trade to develop with Britain, which controlled the Atlantic sea lanes.

Roosevelt favored the Navy (he was in effective charge in World War I), and used relief programs such as the PWA
PWA
PWA may stand for:* Patients' welfare association* Pacific Western Airlines* People With AIDS* Pirates With Attitude, a warez release group* Prince Willem Alexander, Crown prince of the Netherlands* Printed Wiring Assemblies, Printed Circuit Boards...

 to support Navy yards and build warships. For example in 1933 he authorized $238 million in PWA funds for thirty-two new ships. The Army Air Corps received only $11 million, which barely covered replacements and allowed no expansion.

World War II (1939–1945)

During the interwar period
Interwar period
Interwar period can refer to any period between two wars. The Interbellum is understood to be the period between the end of the Great War or First World War and the beginning of the Second World War in Europe....

 the United States again reduced its military, but mobilized to its largest levels in history during World War II. The global conflict
World war
A world war is a war affecting the majority of the world's most powerful and populous nations. World wars span multiple countries on multiple continents, with battles fought in multiple theaters....

 started on 1 September 1939 and raged until 2 September 1945, involving most of the peoples of the world. It was the most extensive and costly war in history as well as the history of the United States (excepting personnel).

US involvement in World War II was initially limited to providing war material and financial support
Lend-Lease
Lend-Lease was the program under which the United States of America supplied the United Kingdom, the Soviet Union, China, Free France, and other Allied nations with materiel between 1941 and 1945. It was signed into law on March 11, 1941, a year and a half after the outbreak of war in Europe in...

 to Britain, the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

, and the Republic of China
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

. The US entered officially on 8 December 1941 following the Japanese attack
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...

 on Pearl Harbor
Pearl Harbor
Pearl Harbor, known to Hawaiians as Puuloa, is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the U.S. Pacific Fleet...

, Hawaii the previous day. This attack was followed by attacks on US, Dutch and British possessions across the Pacific. On 11 December, the remaining Axis powers
Axis Powers
The Axis powers , also known as the Axis alliance, Axis nations, Axis countries, or just the Axis, was an alignment of great powers during the mid-20th century that fought World War II against the Allies. It began in 1936 with treaties of friendship between Germany and Italy and between Germany and...

, Germany and Italy, declared war on the US, drawing the US firmly into the war and removing all doubts about the global nature of the conflict.
The loss of 8 battleships and 2000 sailors and airmen at Pearl Harbor forced the US to rely on its remaining aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s, which won a major victory over Japan at Midway
Battle of Midway
The Battle of Midway is widely regarded as the most important naval battle of the Pacific Campaign of World War II. Between 4 and 7 June 1942, approximately one month after the Battle of the Coral Sea and six months after Japan's attack on Pearl Harbor, the United States Navy decisively defeated...

 just 6 months into the war, and its growing submarine
Submarine
A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

 fleet. The Navy and Marine Corps followed this up with an island hopping
Pacific War
The Pacific War, also sometimes called the Asia-Pacific War refers broadly to the parts of World War II that took place in the Pacific Ocean, its islands, and in East Asia, then called the Far East...

 campaign across the central and South Pacific in 1943–45, reaching the outskirts of Japan in the Battle of Okinawa
Battle of Okinawa
The Battle of Okinawa, codenamed Operation Iceberg, was fought on the Ryukyu Islands of Okinawa and was the largest amphibious assault in the Pacific War of World War II. The 82-day-long battle lasted from early April until mid-June 1945...

. During 1942 and 1943, the US deployed millions of men and thousands of planes and tanks to the UK, beginning with the strategic bombing
Strategic bombing
Strategic bombing is a military strategy used in a total war with the goal of defeating an enemy nation-state by destroying its economic ability and public will to wage war rather than destroying its land or naval forces...

 of Nazi Germany
Nazi Germany
Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 and occupied Europe and leading up to the Allied invasions of occupied North Africa
Operation Torch
Operation Torch was the British-American invasion of French North Africa in World War II during the North African Campaign, started on 8 November 1942....

 in November, 1942, Sicily and Italy
Allied invasion of Italy
The Allied invasion of Italy was the Allied landing on mainland Italy on September 3, 1943, by General Harold Alexander's 15th Army Group during the Second World War. The operation followed the successful invasion of Sicily during the Italian Campaign...

 in 1943, France
D-Day
D-Day is a term often used in military parlance to denote the day on which a combat attack or operation is to be initiated. "D-Day" often represents a variable, designating the day upon which some significant event will occur or has occurred; see Military designation of days and hours for similar...

 in 1944, and the invasion of Germany in 1945, parallel with the Soviet invasion from the east. That led to the surrender of Nazi Germany
Victory in Europe Day
Victory in Europe Day commemorates 8 May 1945 , the date when the World War II Allies formally accepted the unconditional surrender of the armed forces of Nazi Germany and the end of Adolf Hitler's Third Reich. The formal surrender of the occupying German forces in the Channel Islands was not...

 in May 1945. In the Pacific, the US experienced much success in naval campaigns during 1944, but bloody battles at Iwo Jima
Battle of Iwo Jima
The Battle of Iwo Jima , or Operation Detachment, was a major battle in which the United States fought for and captured the island of Iwo Jima from the Empire of Japan. The U.S...

 and Okinawa
Battle of Okinawa
The Battle of Okinawa, codenamed Operation Iceberg, was fought on the Ryukyu Islands of Okinawa and was the largest amphibious assault in the Pacific War of World War II. The 82-day-long battle lasted from early April until mid-June 1945...

 in 1945 led the US to look for a way to end the war with minimal loss of American lives. The U.S. used atomic bombing of Hiroshima and Nagasaki to shock the Japanese leadership, which (combined with the Soviet invasion of Manchuria) quickly caused the surrender of Japan
Japanese Instrument of Surrender
The Japanese Instrument of Surrender was the written agreement that enabled the Surrender of Japan, marking the end of World War II. It was signed by representatives from the Empire of Japan, the United States of America, the Republic of China, the United Kingdom, the Union of Soviet Socialist...

.

Despite the crippling effects of the Great Depression
Great Depression
The Great Depression was a severe worldwide economic depression in the decade preceding World War II. The timing of the Great Depression varied across nations, but in most countries it started in about 1929 and lasted until the late 1930s or early 1940s...

, the United States was able to mobilize quickly, eventually becoming the dominant military power in most theaters of the war (excepting only eastern Europe and mainland China), and the industrial might of the US economy is widely cited as a major factor in the Allies'
Allies of World War II
The Allies of World War II were the countries that opposed the Axis powers during the Second World War . Former Axis states contributing to the Allied victory are not considered Allied states...

 eventual victory in the war. Early in the war, the US military was perceived by some observers to be too "green" and untested to be of much use other than cannon fodder against experienced German and Japanese troops (especially as their first major action against German forces resulted in the humiliating defeat at the Battle of the Kasserine Pass
Battle of the Kasserine Pass
The Battle of the Kasserine Pass was a battle that took place during the Tunisia Campaign of World War II in February 1943. It was a series of battles fought around Kasserine Pass, a wide gap in the Grand Dorsal chain of the Atlas Mountains in west central Tunisia...

), but the US eventually acquitted itself well and established a modern military tradition. Strategic and tactical lessons learned by the US, such as the importance of air superiority and the dominance of the aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

 in naval actions, continue to guide US military doctrine more than 65 years later.

World War II holds a special place in the American psyche as the country's greatest triumph, and the soldiers of World War II are frequently referred to as "the greatest generation" for their sacrifices in the name of liberty. Over 16 million served (about 11% of the population), and over 400,000 died during the war. The U.S. emerged as one of the two undisputed superpower
Superpower
A superpower is a state with a dominant position in the international system which has the ability to influence events and its own interests and project power on a worldwide scale to protect those interests...

s along with the Soviet Union, and unlike the Soviet Union, the US homeland was virtually untouched by the ravages of war. During and following World War II, the United States and Britain developed an increasingly strong, if one-sided, defence and intelligence relationship. Manifestations of this include extensive basing of US forces in the UK, shared intelligence, shared military technology (e.g. nuclear technology) and shared procurement.

Cold War era (1945–1991)

Following the World War II, the United States emerged as a global superpower
Superpower
A superpower is a state with a dominant position in the international system which has the ability to influence events and its own interests and project power on a worldwide scale to protect those interests...

 vis-a-vis the Soviet Union in the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

. In this period of some forty years, the United States provided foreign military aid and direct involvement in proxy war
Proxy war
A proxy war or proxy warfare is a war that results when opposing powers use third parties as substitutes for fighting each other directly. While powers have sometimes used governments as proxies, violent non-state actors, mercenaries, or other third parties are more often employed...

s against the Soviet Union. It was the principal foreign actor in the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

 and Vietnam War
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...

 during this era. Nuclear weapons were held in ready by the United States under a concept of mutually assured destruction with the Soviet Union.

Postwar Military Reorganization (1947)

The National Security Act of 1947
National Security Act of 1947
The National Security Act of 1947 was signed by United States President Harry S. Truman on July 26, 1947, and realigned and reorganized the U.S. Armed Forces, foreign policy, and Intelligence Community apparatus in the aftermath of World War II...

, meeting the need for a military reorganization to complement the U.S. superpower role, combined and replaced the former Department of the Navy and War Department with a single cabinet
United States Cabinet
The Cabinet of the United States is composed of the most senior appointed officers of the executive branch of the federal government of the United States, which are generally the heads of the federal executive departments...

-level Department of Defense. The act also created the National Security Council, the Central Intelligence Agency, and the Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

.

Korean War (1950–1953)

The Korean War was a conflict between the United States and its United Nations
United Nations
The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 allies and the communist
Communism
Communism is a social, political and economic ideology that aims at the establishment of a classless, moneyless, revolutionary and stateless socialist society structured upon common ownership of the means of production...

 powers under influence of the Soviet Union (also a UN member nation) and the People's Republic of China (which later also gained UN membership). The principal combatants were North and South Korea. Principal allies of South Korea included the United States, Canada, Australia, the United Kingdom, although many other nations sent troops under the aegis of the United Nations
United Nations
The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

. Allies of North Korea included the People's Republic of China, which supplied military forces, and the Soviet Union, which supplied combat advisors and aircraft pilots, as well as arms, for the Chinese and North Korean troops.

The war started badly for the US and UN. North Korean forces struck massively in the summer of 1950 and nearly drove the outnumbered US and ROK defenders into the sea. However the United Nations intervened, naming Douglas MacArthur
Douglas MacArthur
General of the Army Douglas MacArthur was an American general and field marshal of the Philippine Army. He was a Chief of Staff of the United States Army during the 1930s and played a prominent role in the Pacific theater during World War II. He received the Medal of Honor for his service in the...

 commander of its forces, and UN-US-ROK forces held a perimeter around Pusan
Battle of Pusan Perimeter
The Battle of Pusan Perimeter was a large-scale battle between United Nations and North Korean forces lasting from August 4 – September 18, 1950. It was one of the first major engagements of the Korean War...

, gaining time for reinforcement. MacArthur, in a bold but risky move, ordered an amphibious invasion well behind the front lines at Inchon
Battle of Inchon
The Battle of Inchon was an amphibious invasion and battle of the Korean War that resulted in a decisive victory and strategic reversal in favor of the United Nations . The operation involved some 75,000 troops and 261 naval vessels, and led to the recapture of the South Korean capital Seoul two...

, cutting off and routing the North Koreans and quickly crossing the 38th Parallel into North Korea. As UN forces continued to advance toward the Yalu River
Yalu River
The Yalu River or the Amnok River is a river on the border between North Korea and the People's Republic of China....

 on the border with Communist China, the Chinese crossed the Yalu River in October and launched a series of surprise attacks that sent the UN forces reeling back across the 38th Parallel. Truman originally wanted a Rollback
Rollback
In political science, rollback is the strategy of forcing change in the major policies of a state, usually by replacing its ruling regime. It contrasts with containment, which means preventing the expansion of that state; and with détente, which means a working relationship with that state...

 strategy to unify Korea; after the Chinese successes he settled for a Containment
Containment
Containment was a United States policy using military, economic, and diplomatic strategies to stall the spread of communism, enhance America’s security and influence abroad, and prevent a "domino effect". A component of the Cold War, this policy was a response to a series of moves by the Soviet...

 policy to split the country. MacArthur argued for rollback but was fired. Peace negotiations dragged on for two years until President Dwight D. Eisenhower
Dwight D. Eisenhower
Dwight David "Ike" Eisenhower was the 34th President of the United States, from 1953 until 1961. He was a five-star general in the United States Army...

 threatened China with nuclear weapons; an armistice was quickly reached with the two Koreas remaining divided at the 38th parallel
38th parallel north
The 38th parallel north is a circle of latitude that is 38 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean...

. North and South Korea are still today in a state of war, having never signed a peace treaty, and American forces remain stationed in South Korea as part of American foreign policy.

Lebanon crisis of 1958

In the Lebanon crisis of 1958
Lebanon crisis of 1958
The 1958 Lebanon crisis was a Lebanese political crisis caused by political and religious tensions in the country. It included a U.S. military intervention.-Background:...

 that threatened civil war, Operation Blue Bat deployed several hundred Marines to bolster the pro-Western Lebanese government from July 15 to October 25, 1958.

Dominican Intervention

On April 28, 1965, 400 Marines were landed in Santo Domingo to evacuate the American Embassy and foreign nationals after dissident Dominican armed forces attempted to overthrow the ruling civilian junta. By mid-May, peak strength of 23,850 U.S. soldiers, Marines, and Airmen were in the Dominican Republic and some 38 naval ships were positioned offshore. They evacuated nearly 6,500 men, women, and children of 46 nations, and distributed more than 8 million tons of food.

Vietnam War (1955–1975)

The Vietnam War
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...

 a war fought between 1957 and 1975 on the ground in South Vietnam and bordering areas of Cambodia
Cambodia
Cambodia , officially known as the Kingdom of Cambodia, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia...

 and Laos
Laos
Laos Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ Sathalanalat Paxathipatai Paxaxon Lao, officially the Lao People's Democratic Republic, is a landlocked country in Southeast Asia, bordered by Burma and China to the northwest, Vietnam to the east, Cambodia to the south and Thailand to the west...

 (see Secret War) and in the strategic bombing
Strategic bombing
Strategic bombing is a military strategy used in a total war with the goal of defeating an enemy nation-state by destroying its economic ability and public will to wage war rather than destroying its land or naval forces...

 (see Operation Rolling Thunder
Operation Rolling Thunder
Operation Rolling Thunder was the title of a gradual and sustained US 2nd Air Division , US Navy, and Republic of Vietnam Air Force aerial bombardment campaign conducted against the Democratic Republic of Vietnam from 2 March 1965 until 1 November 1968, during the Vietnam War.The four objectives...

) of North Vietnam. American advisors came in the late 1950s to help the RVN (Republic of Vietnam) combat Communist insurgents known as "Viet Cong." Major American military involvement began in 1964, after Congress provided President Lyndon B. Johnson
Lyndon B. Johnson
Lyndon Baines Johnson , often referred to as LBJ, was the 36th President of the United States after his service as the 37th Vice President of the United States...

 with blanket approval for presidential use of force in the Gulf of Tonkin Resolution
Gulf of Tonkin Resolution
The Tonkin Gulf Resolution was a joint resolution which the United States Congress passed on August 10, 1964 in response to a sea battle between the North Vietnamese Navy's Torpedo Squadron 10135 and the destroyer on August 2 and an alleged second naval engagement between North Vietnamese boats...

.

Fighting on one side was a coalition of forces including the Republic of Vietnam (South Vietnam
South Vietnam
South Vietnam was a state which governed southern Vietnam until 1975. It received international recognition in 1950 as the "State of Vietnam" and later as the "Republic of Vietnam" . Its capital was Saigon...

 or the "RVN"), the United States, supplemented by South Korea, Thailand, Australia, New Zealand, and the Philippines. The allies fought against the North Vietnamese Army (NVA) as well as the National Liberation Front (NLF, also known as Viet communists Viet Cong), or "VC", a guerrilla force within South Vietnam. The NVA received substantial military and economic aid from the Soviet Union and China, turning Vietnam into a proxy war
Proxy war
A proxy war or proxy warfare is a war that results when opposing powers use third parties as substitutes for fighting each other directly. While powers have sometimes used governments as proxies, violent non-state actors, mercenaries, or other third parties are more often employed...

.
The U.S. framed the war as part of its policy of containment
Containment
Containment was a United States policy using military, economic, and diplomatic strategies to stall the spread of communism, enhance America’s security and influence abroad, and prevent a "domino effect". A component of the Cold War, this policy was a response to a series of moves by the Soviet...

 of Communism
Communism
Communism is a social, political and economic ideology that aims at the establishment of a classless, moneyless, revolutionary and stateless socialist society structured upon common ownership of the means of production...

 in south Asia, but American forces were frustrated by an inability to engage the enemy in decisive battles, corruption and incompetence in the Army of the Republic of Vietnam, and ever increasing protests at home. The Tet Offensive in 1968, although a major military defeat for the NLF with half their forces eliminated, marked the psychological turning point in the war. With President Richard M. Nixon opposed to containment and more interested in achieving détente with both the Soviet Union and China, American policy shifted to "Vietnamization," – providing very large supplies of arms and letting the Vietnamese fight it out themselves. After more than 57,000 dead and many more wounded, American forces withdrew in 1973 with no clear victory, and in 1975 South Vietnam was finally conquered by communist North Vietnam and unified.

Memories and lessons from the war are still a major factor in American politics. One side views the war as a necessary part of the Containment
Containment
Containment was a United States policy using military, economic, and diplomatic strategies to stall the spread of communism, enhance America’s security and influence abroad, and prevent a "domino effect". A component of the Cold War, this policy was a response to a series of moves by the Soviet...

 policy, which allowed the enemy to choose the time and place of warfare. Others note the U.S. made major strategic gains as the Communists were defeated in Indonesia, and by 1972 both Moscow and Beijing were competing for American support, at the expense of their allies in Hanoi. Critics see the conflict as a "quagmire"--an endless waste of American blood and treasure in a conflict that did not concern US interests. Fears of another quagmire have been major factors in foreign policy debates ever since. The draft became extremely unpopular, and President Nixon ended it in 1973, forcing the military (the Army especially) to rely entirely upon volunteers. That raised the issue of how well the professional military reflected overall American society and values; the soldiers typically took the position that their service represented the highest and best American values.

See also United States Air Force in Thailand
United States Air Force In Thailand
The United States Air Force deployed combat aircraft to Thailand from 1961 to 1975 during the Vietnam War. Today, USAF units train annually with other Asian Air Forces in Thailand...

.

Tehran hostage rescue

During and Iran hostage crisis
Iran hostage crisis
The Iran hostage crisis was a diplomatic crisis between Iran and the United States where 52 Americans were held hostage for 444 days from November 4, 1979 to January 20, 1981, after a group of Islamist students and militants took over the American Embassy in Tehran in support of the Iranian...

, Operation Eagle Claw
Operation Eagle Claw
Operation Eagle Claw was an American military operation ordered by President Jimmy Carter to attempt to put an end to the Iran hostage crisis by rescuing 52 Americans held captive at the U.S. Embassy in Tehran, Iran on 24 April 1980...

 was an attempt to rescue the hostages. It failed because of inappropriate equipment, incomplete and unrealistic planning, and the lack of joint service training. The fiasco led directly to the creation of SOCOM
United States Special Operations Command
The United States Special Operations Command is the Unified Combatant Command charged with overseeing the various Special Operations Commands of the Army, Air Force, Navy and Marine Corps of the United States Armed Forces. The command is part of the Department of Defense...

.

Grenada

In October, 1983, a violent power struggle threatened American lives in the small Caribbean nation of Grenada. Neighboring nations asked the U.S. to intervene. The invasion was a hurriedly devised grouping of paratroopers, Marines, Rangers, and special operations forces in Operation Urgent Fury
Invasion of Grenada
The Invasion of Grenada, codenamed Operation Urgent Fury, was a 1983 United States-led invasion of Grenada, a Caribbean island nation with a population of about 100,000 located north of Venezuela. Triggered by a military coup which had ousted a four-year revolutionary government, the invasion...

. Over a thousand Americans quickly seized the entire island, taking hundreds of military and civilian prisoners, especially Cubans.

Beirut

In 1983 fighting between Palestinian refugees and Lebanese
Lebanon
Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...

 factions reignited that nation's long-running civil war. A UN agreement brought an international force of peacekeepers
Multinational Force in Lebanon
The Multinational Force in Lebanon was an international peacekeeping force created in 1982 and sent to Lebanon to oversee the withdrawal of the Palestine Liberation Organization...

 to occupy Beirut and guarantee security. US Marines landed in August 1982 along with Italian and French forces. On October 23, 1983, a suicide bomber driving a truck filled with 6 tons of TNT crashed through a fence and destroyed the Marine barracks, killing 241 Marines; seconds later, a second bomber leveled a French barracks, killing 58. Subsequently the US Navy engaged in bombing of militia positions inside Lebanon. While US President Ronald Reagan
Ronald Reagan
Ronald Wilson Reagan was the 40th President of the United States , the 33rd Governor of California and, prior to that, a radio, film and television actor....

 was initially defiant, political pressure at home eventually forced the withdrawal of the Marines in February 1984.

The attack on the US Marine barracks resulted in the single largest loss of life for the USMC since World War II.

In 2003, a judge for the United States District Court for the District of Columbia
United States District Court for the District of Columbia
The United States District Court for the District of Columbia is a federal district court. Appeals from the District are taken to the United States Court of Appeals for the District of Columbia Circuit The United States District Court for the District of Columbia (in case citations, D.D.C.) is a...

 ruled that the Islamic Republic of Iran was responsible for the attack.

Libya

Code-named "Operation El Dorado Canyon", comprised the joint United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

, Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 and Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 air-strikes against Libya
Libya
Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west....

 on April 15, 1986. The attack was carried out in response to the 1986 Berlin discotheque bombing
1986 Berlin discotheque bombing
The 1986 Berlin discotheque bombing was a terrorist attack on the La Belle discothèque in West Berlin, Germany, an entertainment venue that was commonly frequented by United States soldiers...

.

Panama

On December 20, 1989 the United States invaded Panama
United States invasion of Panama
The United States Invasion of Panama, code-named Operation Just Cause, was the invasion of Panama by the United States in December 1989. It occurred during the administration of U.S. President George H. W...

, mainly from U.S. bases within the then-Canal Zone
Panama Canal Zone
The Panama Canal Zone was a unorganized U.S. territory located within the Republic of Panama, consisting of the Panama Canal and an area generally extending 5 miles on each side of the centerline, but excluding Panama City and Colón, which otherwise would have been partly within the limits of...

, to oust dictator and international drug trafficker Manuel Noriega
Manuel Noriega
Manuel Antonio Noriega Moreno is a Panamanian politician and soldier. He was military dictator of Panama from 1983 to 1989.The 1989 invasion of Panama by the United States removed him from power; he was captured, detained as a prisoner of war, and flown to the United States. Noriega was tried on...

. American forces quickly overwhelmed the Panamanian Defense Forces, Noriega was captured on January 3, 1990 and imprisoned in the U.S. and a new government was installed.

Post–Cold War era (1991–2001)

Persian Gulf War (1990–1991)

The Persian Gulf War
Gulf War
The Persian Gulf War , commonly referred to as simply the Gulf War, was a war waged by a U.N.-authorized coalition force from 34 nations led by the United States, against Iraq in response to Iraq's invasion and annexation of Kuwait.The war is also known under other names, such as the First Gulf...

 was a conflict between Iraq
Iraq
Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

 and a coalition force of 34 nations led by the United States. The lead up to the war began with the Iraq
Iraq
Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

i invasion of Kuwait
Kuwait
The State of Kuwait is a sovereign Arab state situated in the north-east of the Arabian Peninsula in Western Asia. It is bordered by Saudi Arabia to the south at Khafji, and Iraq to the north at Basra. It lies on the north-western shore of the Persian Gulf. The name Kuwait is derived from the...

 in August 1990 which was met with immediate economic sanctions by the United Nations
United Nations
The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 against Iraq. The coalition commenced hostilities in January 1991, resulting in a decisive victory for the U.S. led coalition forces, which drove Iraqi forces out of Kuwait with minimal coalition deaths. Despite the low death toll, over 180,000 US veterans would later be classified as "permanently disabled" according to the US Department of Veterans Affairs (National Gulf War Resource Center; see also Gulf War Syndrome
Gulf War syndrome
Gulf War syndrome or Gulf War illness describes a medical condition that affected veterans and civilians who were near conflicts during or downwind of chemical weapons depot demolition, after the 1991 Gulf War. A wide range of acute and chronic symptoms have included fatigue, musculoskeletal...

). The main battles were aerial and ground combat within Iraq, Kuwait and bordering areas of Saudi Arabia
Saudi Arabia
The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

. Land combat did not expand outside of the immediate Iraq/Kuwait/Saudi border region, although the coalition bombed cities and strategic targets across Iraq, and Iraq fired missiles on Israeli and Saudi cities.
Before the war, many observers believed the US and its allies could win but might suffer substantial casualties (certainly more than any conflict since Vietnam), and that the tank battles across the harsh desert might rival those of North Africa during World War II. After nearly 50 years of proxy war
Proxy war
A proxy war or proxy warfare is a war that results when opposing powers use third parties as substitutes for fighting each other directly. While powers have sometimes used governments as proxies, violent non-state actors, mercenaries, or other third parties are more often employed...

s, and constant fears of another war in Europe between NATO and the Warsaw Pact
Warsaw Pact
The Warsaw Treaty Organization of Friendship, Cooperation, and Mutual Assistance , or more commonly referred to as the Warsaw Pact, was a mutual defense treaty subscribed to by eight communist states in Eastern Europe...

, some thought the Persian Gulf War might finally answer the question of which military philosophy would have reigned supreme. Iraqi forces were battle-hardened after 8 years of war with Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

, and they were well-equipped with late model Soviet tanks and jet fighters, but the anti-aircraft weapons were crippled; in comparison, the US had no large-scale combat experience since its withdrawal from Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

 nearly 20 years earlier, and major changes in US doctrine, equipment and technology since then had never been tested under fire.

However, the battle was one-sided almost from the beginning. The reasons for this are the subject of continuing study by military strategists and academics. There is general agreement that US technological superiority was a crucial factor but the speed and scale of the Iraqi collapse has also been attributed to poor strategic and tactical leadership and low morale among Iraqi troops, which resulted from a history of incompetent leadership. After devastating initial strikes against Iraqi air defenses and command and control facilities on 17 January 1991, coalition forces achieved total air superiority almost immediately. The Iraqi air force was destroyed within a few days, with some planes fleeing to Iran where they were interned for the duration of the conflict. The overwhelming technological advantages of the US, such as stealth aircraft
Stealth aircraft
Stealth aircraft are aircraft that use stealth technology to avoid detection by employing a combination of features to interfere with radar as well as reduce visibility in the infrared, visual, audio, and radio frequency spectrum. Development of stealth technology likely began in Germany during...

 and infrared
Infrared
Infrared light is electromagnetic radiation with a wavelength longer than that of visible light, measured from the nominal edge of visible red light at 0.74 micrometres , and extending conventionally to 300 µm...

 sights, quickly turned the air war into a "turkey shoot
Turkey shoot
A turkey shoot is an opportunity for an individual or a party to very easily take advantage of a situation.A "turkey shoot" is also a shooting contest where frozen turkeys are awarded as prizes. The shoot is most commonly held, using shotguns aimed at paper targets about 25-35 yards away...

". The heat signature of any tank which started its engine made an easy target. Air defense radars were quickly destroyed by radar-seeking missiles fired from wild weasel
Wild Weasel
A Wild Weasel is an aircraft specially equipped with radar seeking missiles, and tasked with destroying the radars and SAM installations of enemy air defence systems....

 aircraft. Grainy video clips, shot from the nose cameras of missiles as they zeroed in on impossibly small targets, were a staple of US news coverage and revealed to the world a new kind of war, compared by some to a video game. Over 6 weeks of relentless pounding by planes and helicopters, the Iraqi army was almost completely beaten but did not retreat, under orders from Iraqi President Saddam Hussein
Saddam Hussein
Saddam Hussein Abd al-Majid al-Tikriti was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003...

, and by the time the ground forces invaded on 24 February, many Iraqi troops quickly surrendered to forces much smaller than their own; in one instance, Iraqi forces attempted to surrender to a television camera crew that was advancing with coalition forces.

After just 100 hours of ground combat, and with all of Kuwait and much of southern Iraq under coalition control, US President George H. W. Bush
George H. W. Bush
George Herbert Walker Bush is an American politician who served as the 41st President of the United States . He had previously served as the 43rd Vice President of the United States , a congressman, an ambassador, and Director of Central Intelligence.Bush was born in Milton, Massachusetts, to...

 ordered a cease-fire and negotiations began resulting in an agreement for cessation of hostilities. Some US politicians were disappointed by this move, believing Bush should have pressed on to Baghdad and removed Hussein from power; there is little doubt that coalition forces could have accomplished this if they had desired. Still, the political ramifications of removing Hussein would have broadened the scope of the conflict greatly, and many coalition nations refused to participate in such an action, believing it would create a power vacuum and destabilize the region.

Following the Persian Gulf War, to protect minority populations, the US, Britain, and France declared and maintained no-fly zones
Iraqi no-fly zones
The Iraqi no-fly zones were a set of two separate no-fly zones , and were proclaimed by the United States, United Kingdom and France after the Gulf War of 1991 to protect the Kurdish people in northern Iraq and Shiite Muslims in the south. Iraqi aircraft were forbidden from flying inside the zones...

 in northern and southern Iraq, which the Iraqi military frequently tested. The no-fly zones persisted until the 2003 invasion of Iraq, although France withdrew from participation in patrolling the no-fly zones in 1996, citing a lack of humanitarian purpose for the operation.

Somalia

US troops participated in a UN peacekeeping mission in Somalia
Somalia
Somalia , officially the Somali Republic and formerly known as the Somali Democratic Republic under Socialist rule, is a country located in the Horn of Africa. Since the outbreak of the Somali Civil War in 1991 there has been no central government control over most of the country's territory...

 beginning in 1992. By 1993 the US troops were augmented with Rangers and special forces with the aim of capturing warlord Mohamed Farrah Aidid
Mohamed Farrah Aidid
General Mohamed Ali Farrah Aidid was a controversial Somali military leader, often described as a warlord. A former general and diplomat, he was the chairman of the United Somali Congress and later led the Somali National Alliance...

, whose forces had massacred peacekeepers from Pakistan. During a raid in downtown Mogadishu, US troops became trapped overnight by a general uprising in the Battle of Mogadishu. 18 American soldiers were killed, and a US television crew filmed graphic images of the body of one soldier being dragged through the streets by an angry mob. Somali guerrillas paid a staggering toll at an estimated 1,000–5,000 total casualties during the conflict. After much public disapproval, American forces were quickly withdrawn by President Bill Clinton
Bill Clinton
William Jefferson "Bill" Clinton is an American politician who served as the 42nd President of the United States from 1993 to 2001. Inaugurated at age 46, he was the third-youngest president. He took office at the end of the Cold War, and was the first president of the baby boomer generation...

. The incident profoundly affected US thinking about peacekeeping and intervention. The book Black Hawk Down was written about the battle, and was the basis for the later movie of the same name.

Haiti

Operation Uphold Democracy (September 19, 1994 – March 31, 1995) was an intervention designed to remove the military regime installed by the 1991 Haitian coup d'état, which overthrew the elected President Jean-Bertrand Aristide. The operation was effectively authorized by the 31 July 1994 United Nations Security Council Resolution 940.

Yugoslavia

During the war in Yugoslavia in the early 1990s, the US operated in Bosnia and Herzegovina
Bosnia and Herzegovina
Bosnia and Herzegovina , sometimes called Bosnia-Herzegovina or simply Bosnia, is a country in Southern Europe, on the Balkan Peninsula. Bordered by Croatia to the north, west and south, Serbia to the east, and Montenegro to the southeast, Bosnia and Herzegovina is almost landlocked, except for the...

 as part of the NATO-led multinational implementation force (IFOR
IFOR
The Implementation Force was a NATO-led multinational peacekeeping force in Bosnia and Herzegovina under a one-year mandate from 20 December 1995 to 20 December 1996 under the codename Operation Joint Endeavour. Its task was to implement the military Annexes of The General Framework Agreement for...

) in Operation Joint Endeavour . The USA was one of the NATO member countries who bombed Yugoslavia between March 24 and June 9, 1999 during the Kosovo War
Kosovo War
The term Kosovo War or Kosovo conflict was two sequential, and at times parallel, armed conflicts in Kosovo province, then part of FR Yugoslav Republic of Serbia; from early 1998 to 1999, there was an armed conflict initiated by the ethnic Albanian "Kosovo Liberation Army" , who sought independence...

 and later contributed to the multinational force KFOR.

War on Terrorism (2001–present)

The War on Terrorism
War on Terrorism
The War on Terror is a term commonly applied to an international military campaign led by the United States and the United Kingdom with the support of other North Atlantic Treaty Organisation as well as non-NATO countries...

 is a global effort by the governments of several countries (primarily the United States and its principal allies) to neutralize international terrorist
Terrorism
Terrorism is the systematic use of terror, especially as a means of coercion. In the international community, however, terrorism has no universally agreed, legally binding, criminal law definition...

 groups (primarily radical Islamist terrorist groups, including al-Qaeda
Al-Qaeda
Al-Qaeda is a global broad-based militant Islamist terrorist organization founded by Osama bin Laden sometime between August 1988 and late 1989. It operates as a network comprising both a multinational, stateless army and a radical Sunni Muslim movement calling for global Jihad...

) and ensure that rogue nations no longer support terrorist activities. It has been adopted as a response to the September 11, 2001 attacks
September 11, 2001 attacks
The September 11 attacks The September 11 attacks The September 11 attacks (also referred to as September 11, September 11th or 9/119/11 is pronounced "nine eleven". The slash is not part of the pronunciation...

 on the United States.

Afghanistan

The invasion of Afghanistan
War in Afghanistan (2001–present)
The War in Afghanistan began on October 7, 2001, as the armed forces of the United States of America, the United Kingdom, Australia, and the Afghan United Front launched Operation Enduring Freedom...

 (Operation Enduring Freedom – Afghanistan) to depose that country's Taliban government and destroy training camps associated with al-Qaida is understood to have been the opening, and in many ways defining, campaign of the broader War on Terrorism. The emphasis on Special Operations Forces (SOF), political negotiation with autonomous military units, and the use of proxy militaries marked a significant change from prior U.S. military approaches.

Philippines

In January 2002, the U.S. sent more than 1,200 troops (later raised to 2,000) to assist the Armed Forces of the Philippines
Armed Forces of the Philippines
The Armed Forces of the Philippines is composed of the Philippine Army, Philippine Navy and Philippine Air Force...

 in combating terrorist groups linked to al-Qaida, such as Abu Sayyaf
Abu Sayyaf
Abu Sayyaf also known as al-Harakat al-Islamiyya is one of several military Islamist separatist groups based in and around the southern Philippines, in Bangsamoro where for almost 30 years various Muslim groups have been engaged in an insurgency for an independent province in the country...

, under Operation Enduring Freedom - Philippines
Operation Enduring Freedom - Philippines
Operation Enduring Freedom – Philippines or Operation Freedom Eagle is part of Operation Enduring Freedom and the U.S. Global War on Terrorism. About 600 U.S. military personnel are advising and assisting the Armed Forces of the Philippines in the Southern Philippines...

. Operations are taking place mostly in the Sulu Archipelago
Sulu Archipelago
The Sulu Archipelago is a chain of islands in the southwestern Philippines. This archipelago is considered to be part of the Moroland by the local rebel independence movement. This island group forms the northern limit of the Celebes Sea....

, where terrorists and other groups are active. The majority of troops provide logistics
Logistics
Logistics is the management of the flow of goods between the point of origin and the point of destination in order to meet the requirements of customers or corporations. Logistics involves the integration of information, transportation, inventory, warehousing, material handling, and packaging, and...

; however, a sizable portion are Special Forces troops that are training and assisting in combat operations against the terrorist groups.

Iraq

After the lengthy Iraq disarmament crisis
Iraq disarmament crisis
The issue of Iraq's disarmament reached a crisis in 2002-2003, when U.S. President George W. Bush demanded a complete end to what he alleged was Iraqi production of weapons of mass destruction and that Iraq comply with UN Resolutions requiring UN weapons inspectors unfettered access to areas those...

 culminated with an American demand that Iraqi President Saddam Hussein
Saddam Hussein
Saddam Hussein Abd al-Majid al-Tikriti was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003...

 leave Iraq
Iraq
Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

, which was refused, a coalition
Coalition of the willing
The term coalition of the willing is a post-1990 political phrase used to collectively describe participants in military or military-humanitarian interventions for which the United Nations Security Council cannot agree to mount a full UN peacekeeping operation...

 led by the United States and the United Kingdom fought the Iraqi army in the 2003 invasion of Iraq
2003 invasion of Iraq
The 2003 invasion of Iraq , was the start of the conflict known as the Iraq War, or Operation Iraqi Freedom, in which a combined force of troops from the United States, the United Kingdom, Australia and Poland invaded Iraq and toppled the regime of Saddam Hussein in 21 days of major combat operations...

. Approximately 250,000 United States troops, with support from 45,000 British, 2,000 Australian and 200 Polish combat forces, entered Iraq
Iraq
Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

 primarily through their staging area
Staging area
A staging area is a location where organisms, people, vehicles, equipment or material are assembled before use.- In construction :...

 in Kuwait
Kuwait
The State of Kuwait is a sovereign Arab state situated in the north-east of the Arabian Peninsula in Western Asia. It is bordered by Saudi Arabia to the south at Khafji, and Iraq to the north at Basra. It lies on the north-western shore of the Persian Gulf. The name Kuwait is derived from the...

. (Turkey had refused to permit its territory to be used for an invasion from the north.) Coalition forces also supported Iraqi Kurdish militia
Peshmerga
Peshmerga or Peshmerge is the term used by Kurds to refer to armed Kurdish fighters. Literally meaning "those who face death" the Peshmerga forces of Kurdistan have been in existence since the advent of the Kurdish independence movement in the early 1920s, following the collapse of the Ottoman...

, estimated to number upwards of 50,000. After approximately three weeks of fighting, Hussein and the Ba'ath Party were forcibly removed, followed by 9 years of military occupation by the United States.

Libyan intervention

As a result of the 2011 Libyan uprising, the United Nations
United Nations
The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 enacted United Nations Security Council Resolution 1973
United Nations Security Council Resolution 1973
United Nations Security Council Resolution 1973, on the situation in Libya, is a measure that was adopted on 17 March 2011. The Security Council resolution was proposed by France, Lebanon, and the United Kingdom....

, which imposed a no-fly zone over Libya, and the protection of civilians from the loyalist forces
Military of Libya
The Libyan Armed Forces constituted the state defence organisation of the Libyan Arab Jamahiriya before they were destroyed, and are being replaced by a new national army. A Major General, Suleiman Mahmoud al-Obeidi, was named interim chief of staff of the rebellion's armed forces in mid July...

 of Muammar Gaddafi
Muammar Gaddafi
Muammar Muhammad Abu Minyar Gaddafi or "September 1942" 20 October 2011), commonly known as Muammar Gaddafi or Colonel Gaddafi, was the official ruler of the Libyan Arab Republic from 1969 to 1977 and then the "Brother Leader" of the Libyan Arab Jamahiriya from 1977 to 2011.He seized power in a...

. The United States, along with several other nations, committed a coalition force against Gaddafi's forces. On 19 March, the first U.S. action was taken when 114 Tomahawk missiles launched by US and UK warships destroyed shoreline air defenses of the Gaddafi regime. The U.S. continued to play a major role in Operation Unified Protector
Operation Unified Protector
Operation Unified Protector was an NATO operation enforcing United Nations Security Council resolutions 1970 and 1973 concerning the 2011 Libyan civil war and adopted on 17 February and 17 March respectively...

, the NATO-directed mission that eventually incorporated all of the military coalition's actions in the theatre. Throughout the war, however, the Obama administration
Presidency of Barack Obama
The Presidency of Barack Obama began at noon EST on January 20, 2009 when he became the 44th President of the United States. Obama was a United States Senator from Illinois at the time of his victory over Arizona Senator John McCain in the 2008 presidential election...

 maintained that the U.S. was playing a supporting role only and was following the UN mandate to protect civilians, while the real conflict was between Gaddafi's loyalists and Libyan rebels
Anti-Gaddafi forces
The anti-Gaddafi forces were Libyan groups that opposed and militarily defeated the government of Muammar Gaddafi, killing him in the process. These opposition forces included organised and armed militia groups, participants in the 2011 Libyan civil war, Libyan diplomats who switched their...

 fighting to depose him. This doctrine was occasionally derided by some of Obama's detractors as "leading from behind", though others argued that it was a sensible approach that avoided some of the perceived pitfalls of the Iraq War strategy.

After the Battle of Tripoli
Battle of Tripoli (2011)
The Battle of Tripoli was a military confrontation in Tripoli, Libya, between loyalists of Muammar Gaddafi, the longtime leader of Libya, and the National Transitional Council, which was attempting to overthrow Gaddafi and take control of the capital...

 saw Gaddafi's grip on power broken, the U.S. sent at least four uniformed personnel to help protect and rebuild the battle-damaged U.S. Embassy in the Libyan capital
Tripoli
Tripoli is the capital and largest city in Libya. It is also known as Western Tripoli , to distinguish it from Tripoli, Lebanon. It is affectionately called The Mermaid of the Mediterranean , describing its turquoise waters and its whitewashed buildings. Tripoli is a Greek name that means "Three...

, breaking an earlier promise it had made not to place "boots on the ground" in Libya.

During the conflict, Libya was also a theatre of drone
Unmanned aerial vehicle
An unmanned aerial vehicle , also known as a unmanned aircraft system , remotely piloted aircraft or unmanned aircraft, is a machine which functions either by the remote control of a navigator or pilot or autonomously, that is, as a self-directing entity...

 activity. Obama authorised the use of armed USAF
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

 drones by NATO forces one month into the military intervention, and a General Atomics MQ-1 Predator participated in airstrikes that destroyed part of Gaddafi's convoy as it attempted to flee the fall
Battle of Sirte (2011)
The Battle of Sirte was a battle of the 2011 Libyan civil war that began when the National Liberation Army attacked forces loyal to ousted leader Muammar Gaddafi in his hometown and designated capital of Sirte, on the Gulf of Sidra...

 of Sirte
Sirte
Sirte is a city in LibyaSirte may also refer to:* Sirte Declaration, a 1999 resolution to create the African Union* Sirte Oil Company, a Libyan oil companyIn geography:* Gulf of Sirte, alias for Gulf of Sidra on Libya's coast...

 on 20 October 2011. Gaddafi, who survived the NATO attack but was found wounded by Misratan fighters hours later, died later that morning. It was unclear whether he succumbed to his injuries, was killed in a separate firefight, or was shot or beaten to death while in custody.

See also

  • United States Armed Forces
    United States armed forces
    The United States Armed Forces are the military forces of the United States. They consist of the Army, Navy, Marine Corps, Air Force, and Coast Guard.The United States has a strong tradition of civilian control of the military...

    • History of the United States Army
      History of the United States Army
      From its formation in 1775, the United States Army has been the primary land based portion of the United States military. Though not solely used as a military force, sometimes helping in domestic violence and disaster situations, the Army's primary responsibility has been the fighting of land...

      • National Museum of the United States Army
        National Museum of the United States Army
        The National Museum of the United States Army will be dedicated to telling the complete story of the U.S. Army, from 1775 to present. The museum, to be built at Fort Belvoir, Virginia in 2015, is destined to become the Army’s national landmark, celebrating the Army’s contributions to the nation and...

    • History of the United States Marine Corps
      History of the United States Marine Corps
      The history of the United States Marine Corps began with the founding of the Continental Marines on November 10, 1775 to conduct ship-to-ship fighting, provide shipboard security and discipline enforcement, and assist in landing forces. Its mission evolved with changing military doctrine and...

      • National Museum of the Marine Corps
        National Museum of the Marine Corps
        The National Museum of the Marine Corps is the historical museum of the United States Marine Corps. It is located in Quantico, Virginia and is open to the public with free admission. The museum had its grand opening on November 10, 2006 and is now the number one tourist attraction in Virginia,...

    • History of the United States Navy
      History of the United States Navy
      The history of the United States Navy divides into two major periods: the "Old Navy", a small but respected force of sailing ships that was also notable for innovation in the use of ironclads during the American Civil War, and the "New Navy", the result of a modernization effort that began in the...

      • U.S. Navy Museum
        U.S. Navy Museum
        The National Museum of the United States Navy, or U.S. Navy Museum for short, is the flagship museum of the United States Navy and is located in the former Breech Mechanism Shop of the old Naval Gun Factory on the grounds of the Washington Navy Yard in Washington, D.C., USA.The U.S...

    • History of the United States Air Force
      History of the United States Air Force
      The United States Air Force became a separate military service on September 18, 1947, with the implementation of the National Security Act of 1947. The Act created the United States Department of Defense, which was composed of three branches, the Army, Navy and a newly created Air Force...

      • National Museum of the United States Air Force
        National Museum of the United States Air Force
        The National Museum of the United States Air Force is the official museum of the United States Air Force located at Wright-Patterson Air Force Base northeast of Dayton, Ohio. The NMUSAF is the world's largest and oldest military aviation museum with more than 360 aircraft and missiles on display...

    • History of the United States Coast Guard
      History of the United States Coast Guard
      The history of the United States Coast Guard goes back to the Revenue Cutter Service, which was founded on August 4, 1790 as part of the Department of the Treasury...

    • History of civil affairs in the United States armed forces
  • United States and weapons of mass destruction
    United States and weapons of mass destruction
    The United States is known to have possessed three types of weapons of mass destruction: nuclear weapons, chemical weapons and biological weapons. The U.S. is the only country to have used nuclear weapons in combat. The U.S. also used chemical weapons in World War I...

  • United States Department of Defense
    United States Department of Defense
    The United States Department of Defense is the U.S...

  • Awards and decorations of the United States military
    Awards and decorations of the United States military
    Awards and decorations of the United States Military are military decorations which recognize service and personal accomplishments while a member of the United States armed forces...

  • United States casualties of war
    United States casualties of war
    Military casualties suffered by the United States of America in war or deployments-Overview:- Wars ranked by total American deaths :"Deaths per day" are the total number of US military deaths, divided by the number of days between the dates of the commencement and end of hostilities, or until 25...


History of minorities in the United States Armed Forces

  • United States Armed Forces racial desegregation
    • Military history of African Americans
      Military history of African Americans
      The military history of African Americans spans from the arrival of the first black slaves during the colonial history of the United States to the present day...

    • Military history of Asian Americans
      Military History of Asian Americans
      Asian Americans have fought on behalf of the United States since the War of 1812 until today. Due to the small population of Asian Americans in the 19th Century their contributions were not heavily recorded...

    • Military history of Hispanic and Latino Americans
    • Military history of Jewish Americans
      Military history of Jewish Americans
      Jewish Americans have served in the United States armed forces dating back to before the colonial era, when Jews have served in militias of the Thirteen Colonies. Jewish military personnel have served in all branches of the armed forces and in every major armed conflict to which the United States...

    • Military history of Sikh Americans
      Military history of Sikh Americans
      The military history of Sikh Americans dates back as far as World War I, and continues to the present day. However, since the 1980s, observant Sikhs have faced great difficulty in serving due to a discontinuation of exemptions to uniform standards which previously allowed Sikhs to maintain their...

    • Native Americans in the American Civil War
      Native Americans in the American Civil War
      Native Americans in the American Civil War composed various Native American bands, tribes, and nations. Native Americans served in both the Union and Confederate military during the American Civil War. At the outbreak of the war, for example, the minority party of the Cherokees gave its allegiance...

    • Native Americans and World War II
      Native Americans and World War II
      Native Americans and World War II Some 44,000 Native Americans served in the United States military during World War II. By 1940, a large fraction of American Indians lived off reservations; their experiences in the war mirrored the general population. Of special interest was the enormous impact...


Related lists


Surveys

  • Anderson, Fred, ed. The Oxford Companion to American Military History (2000)
  • Black, Jeremy. Fighting for America: The Struggle for Mastery in North America, 1519-1871 (2011)
  • Boyne, Walter J. Beyond the Wild Blue: A History of the U.S. Air Force, 1947–2007 (2007) excerpt and text search, popular
  • Chambers, ed. John Whiteclay. The Oxford Guide to American Military History (1999) ISBN 0-19-507198-0
  • Futrell, Robert Frank. Ideas, Concepts, Doctrine: A History of Basic Thinking in the United States Air Force (2 vol. 1979)
  • Doughty, Robert. American Military History and the Evolution of Western Warfare, (1996) ISBN 0-669-41683-5
  • Hearn, Chester G. Air Force: An Illustrated History: The U.S. Air Force from 1910 to the 21st Century (2008), popular excerpt and text search
  • Howarth, Stephen. To Shining Sea: A History of the United States Navy, 1775–1998 (1999) excerpt and text search; a standard history
  • Love, Robert W. History of the U.S. Navy, 1775–1941 (1992) and History of the U.S. Navy, 1942–1991 (1992) vol 1 excerpt and text search; vol 2 excerpt and text search; a standard history
  • Matloff, Maurice, ed. American Military History (1996) full text online; standard textbook used in ROTC
  • Millett, Allan R., and Peter Maslowski. For the common defense: a military history of the United States of America (1984)
  • Millett, Allan R. Semper Fidelis. A History of the United States Marine Corps (1991)
  • Murray, Stuart. Atlas of American Military History (2005) ISBN 0-8160-5578-5
  • Sweeney, Jerry K., and Kevin B. Byrne, eds. A Handbook of American Military History: From the Revolutionary War to the Present, (1997) ISBN 0-8133-2871-3
  • Weigley, Russell Frank. The American Way of War: A History of United States Military Strategy and Policy, (1977) excerpt and text search

Pre 1775

  • Anderson, Fred. The War That Made America: A Short History of the French and Indian War (2006) excerpt and text search
  • Grenier, John. The First Way of War: American War Making on the Frontier, 1607–1814 (Cambridge University Press, 2005).
  • Grenier, John. "Recent Trends in the Historiography on Warfare in the Colonial Period (1607–1765)," History Compass April 2010 Volume 8, Issue 4, pages 358–367, DOI: 10.1111/j.1478-0542.2009.00657.x
  • Hirsch, Adam J. The Collision of Military Cultures in Seventeenth-Century New England," Journal of American History, 74 (1988): 1187–1212. in JSTOR
  • Starkey, A. European and Native American Warfare, 1675–1815 (University of Oklahoma Press, 1998)
  • Steele, Ian. Warpaths: Invasions of North America (Oxford University Press, 1994).
  • Tucker, Spencer C., James Arnold, and Roberta Wiener eds. The Encyclopedia of North American Colonial Conflicts to 1775: A Political, Social, and Military History (2008) excerpt and text search

1775–1800

  • Alden, John R. A History of the American Revolution (1989), general survey; strong on military (ISBN 0-306-80366-6)
  • Black, Jeremy. America as a Military Power: From the American Revolution to the Civil War (2002) online edition
  • Carp, E. Wayne. "Early American Military History: A Review of Recent Work", Virginia Magazine of History and Biography, 94 (1986), pp. 259–84.
  • Fremont-Barnes, Gregory, and Richard A. Ryerson, eds. The Encyclopedia of the American Revolutionary War: A Political, Social, and Military History (ABC-CLIO, 2006) 5 volume paper and online editions; 1000 entries by 150 experts, covering all topics
  • Higginbotham, Don
    Don Higginbotham
    Don Higginbotham was an American historian and Dowd Professor of History and Peace, War, and Defense at the University of North Carolina at Chapel Hill. A leading scholar of George Washington, he was a pioneering practitioner of the “new” military history and an expert on colonial and...

    . The War of American Independence: Military Attitudes, Policies, and Practice, 1763–1789 (1971, 1983). an analytical history of the war online via ACLS Humanities E-Book.
  • Lancaster, Bruce. The American Revolution (American Heritage Library) (ISBN 0-8281-0281-3) (1985), heavily illustrated
  • Middlekauff, Robert. The Glorious Cause: The American Revolution, 1763–1789 (2nd ed 2007) online edition

1800–1860

  • Bauer K. Jack. The Mexican War, 1846–1848. (1974), good on military action.
  • Black, Jeremy. America as a Military Power: From the American Revolution to the Civil War (2002) online edition
  • Crawford, Mark et al. eds. Encyclopedia of the Mexican War (1999) (ISBN 1-57607-059-X)
  • Frazier, Donald S. ed. The U.S. and Mexico at War, (1998), 584; an encyclopedia with 600 articles by 200 scholars
  • Heidler, Donald & Jeanne T. Heidler (eds) Encyclopedia of the War of 1812 (2nd ed 2004) 636pp; most comprehensive guide to this war; 500 entries by 70 scholars from several countries
  • Heidler, David S. and Heidler, Jeanne T. The War of 1812. (2002). 217 pp. short survey
  • Heidler, David S. and Heidler, Jeanne T. The Mexican War. (2005). 225 pp. basic survey, with some key primary sources
  • Hickey, Donald R. Don't Give Up the Ship! Myths of the War of 1812. (2006)
  • Hickey, Donald R. The War of 1812: A Forgotten Conflict. (1990), standard scholarly history
  • Johnson, Timothy D. Winfield Scott: The Quest for Military Glory (1998)
  • McCaffrey, James M. Army of Manifest Destiny: The American Soldier in the Mexican War, 1846–1848 (1994)excerpt and text search
  • Quimby, Robert S., The US Army in the War of 1812: an operational and command study (1997) online version
  • Roosevelt, Theodore. The Naval War of 1812 (1882) full text online, by the future president
  • Smith, Justin H. The War with Mexico 2 vol (1919); Pulitzer Prize; 2:233-52; online vol 1; online vol 2 Pulitzer Prize winner.
  • Winders, Richard Price. Mr. Polk's Army (1997) excerpt and text search, focus on the soldiers

Civil War

  • Beringer, Richard E., Archer Jones, and Herman Hattaway. The Elements of Confederate Defeat: Nationalism, War Aims, and Religion (1988)
  • Carter, Alice E. and Richard Jensen. The Civil War on the Web: A Guide to the Very Best Sites (2nd ed. 2003) excerpt and text search
  • Catton, Bruce. Centennial History of the Civil War (3 vols. 1961–65); Catton has many very-well-written books on the war
  • Current, Richard N., et al. eds. Encyclopedia of the Confederacy (1993) (4 Volume set; also 1 vol abridged version)
  • Donald, David et al. The Civil War and Reconstruction (2001); 700 pages
  • Faust, Patricia L., ed. Historical Times Illustrated Encyclopedia of the Civil War (1986) (ISBN 0-06-181261-7) 2000 short entries
  • Fellman, Michael et al. This Terrible War: The Civil War and its Aftermath (2nd ed. 2007), 544 pages
  • Heidler, David Stephen, ed. Encyclopedia of the American Civil War: A Political, Social, and Military History (2002), 1600 entries in 2700 pages in 5 vol or 1-vol editions
  • McPherson, James M. Battle Cry of Freedom: The Civil War Era (1988), 900 pages; excerpt and text search; also complete online edition, Pulitzer Prize; comprehensive history
  • Nevins, Allan
    Allan Nevins
    Allan Nevins was an American historian and journalist, renowned for his extensive work on the history of the Civil War and his biographies of such figures as President Grover Cleveland, Hamilton Fish, Henry Ford, and John D. Rockefeller.-Life:Born in Camp Point, Illinois, Nevins was educated at...

    . Ordeal of the Union, an 8-volume set (1947–1971). the most detailed political, economic and military narrative; by Pulitzer Prize winner
    • vol 1. Fruits of Manifest Destiny, 1847–1852; 2. A House Dividing, 1852–1857; 3. Douglas, Buchanan, and Party Chaos, 1857–1859; 4. Prologue to Civil War, 1859–1861; 5. The Improvised War, 1861–1862; 6. War Becomes Revolution, 1862–1863; 7. The Organized War, 1863–1864; 8. The Organized War to Victory, 1864–1865
  • Rhodes, James Ford. History of the Civil War, 1861–1865 (1918), old, accurate survey; won Pulitzer prize
  • Shannon, Fred. The Organization and Administration of the Union Army 1861–1865 (2 vol 1928) vol 1 excerpt and text search; vol 2 excerpt and text search
  • Symonds, Craig L. and William J. Clipson. A Battlefield Atlas of the Civil War (1993) schematic maps that are easy to understand

1865–1917

  • Abrahamson, James L. America Arms for a New Century: The Making of a Great Military Power (1981), examines reformers and modernizers
  • Coffman, Edward M. The Old Army: A Portrait of the American Army in Peacetime, 1784–1898 (1986).
  • Cosmas, Graham A. An Army for Empire: The United States Army and the Spanish–American War (1971), looks at organization, not combat
  • Holmes, James R. Theodore Roosevelt and World Order: Police Power in International Relations. (2006).
  • Trask, David F. The War with Spain in 1898 (1996), 654pp excerpt and text search, the most detailed scholarly coverage
  • Utley, Robert M
    Robert M. Utley
    Robert Marshall Utley is an author and historian who has written sixteen books on the history of the American West. He was a former chief historian of the National Park Service. Fellow historians commend Utley as the finest historian of the American frontier in the 19th century.The Western History...

    . Frontier Regulars; the United States Army and the Indian, 1866–1891 (1973)

World War I

  • Chambers, John W., II. To Raise an Army: The Draft Comes to Modern America (1987)
  • Coffman, Edward M. The War to End All Wars: The American Military Experience in World War I (1998), a standard history
  • Freidel, Frank. Over There (1964), well illustrated history by scholar
  • Hurley, Alfred F. Billy Mitchell, Crusader for Air Power (1975)
  • Kennedy, David M. Over Here: The First World War and American Society (1982)
  • Koistinen, Paul. Mobilizing for Modern War: The Political Economy of American Warfare, 1865–1919 (2004)
  • Venzon, Anne ed. The United States in the First World War: An Encyclopedia (1995)

Interwar


World War II

  • Ambrose, Stephen. The Supreme Commander: The War Years of Dwight D. Eisenhower (1999) excerpt and text search
  • James, D. Clayton. The Years of Macarthur 1941–1945 (1975), vol 2. of standard scholarly biography
  • Koistinen, Paul A. C. Arsenal of World War II: the political economy of American warfare, 1940–1945? (2004)
  • Larrabee, Eric. Commander in Chief: Franklin Delano Roosevelt, His Lieutenants, and Their War (2004), chapters on all the key American war leaders excerpt and text search
  • Morison, Two-Ocean War: A Short History of the United States Navy in the Second World War (2007)
  • Perret, Geoffrey. There's a War to Be Won: The United States Army in World War II (1997)
  • Perret, Geoffrey. Winged Victory: The Army Air Forces in World War II (1997)
  • Pogue, Forrest. George C. Marshall: Ordeal and Hope, 1939–1942 (1999); George C. Marshall: Organizer of Victory, 1943–1945 (1999); standard scholarly biography
  • Potter, E. B. Nimitz. (1976).
  • Sherrod, Robert Lee. History of Marine Corps Aviation in World War II (1987)
  • Spector, Ronald. Eagle Against the Sun: The American War With Japan (1985)
  • Weigley, Russell. Eisenhower's Lieutenants: The Campaigns of France and Germany, 1944–45 (1990)
  • Weinberg, Gerhard L. A World at Arms: A Global History of World War II (1994). Global history of the war; strong on diplomacy of FDR and other main leaders

Cold War

  • Atkins, Stephen E. Historical Encyclopedia of Atomic Energy. (2000). 491 pp.
  • Bacevich, Andrew J., ed. The Long War: A New History of U.S. National Security Policy Since World War II (2007) excerpt and text search
  • Bundy, McGeorge. Danger and Survival: Choices About the Bomb in the First Fifty Years (1988).
  • Friedman, Norman. The Fifty Year War: Conflict and Strategy in the Cold War. (2000) excerpt and text search
  • Gaddis, John Lewis. Strategies of Containment: A Critical Appraisal of Postwar American National Security Policy (1982) online edition; also excerpt and text search
  • Goldfischer, David. The Best Defense: Policy Alternatives for U.S. Nuclear Security from the 1950s to the 1990s. (1993). 283 pp.
  • Isenberg, Michael T. Shield of the Republic: The United States Navy in an Era of Cold War and Violent Peace 1945–1962 (1993)
  • Lewis, Adrian R. The American Culture of War: The History of U.S. Military Force from World War II to Operation Iraqi Freedom (2006) excerpt and text search
  • Williamson, Samuel R., Jr. and Reardon, Steven L. The Origins of U.S. Nuclear Strategy, 1945–1953. (1993). 224 pp.

Korea and Vietnam

  • Brune, Lester H. ed. The Korean War: Handbook of the Literature and Research (1996) online edition
  • Anderson, David L. Columbia Guide to the Vietnam War (2004).
  • Herring, George C. America's Longest War: The United States and Vietnam, 1950–1975 (4th ed 2001), most widely used short history.
  • Kutler, Stanley ed. Encyclopedia of the Vietnam War (1996). essays by experts
  • Lewy, Guenter. America in Vietnam (1978), defends U.S. actions.
  • Schulzinger, Robert D. Time for War: The United States and Vietnam, 1941–1975. (1997) online edition
  • Tucker, Spencer. ed. Encyclopedia of the Vietnam War (1998) 3 vol. reference set; also one-volume abridgement (2001).
  • Tucker, Spencer. Vietnam. (1999) 226pp. online edition
  • Tucker, Spencer, ed. Encyclopedia of the Korean War (2002)
  • The Pentagon Papers (Gravel ed. 5 vol 1971); combination of narrative and secret documents compiled by Pentagon. excerpts

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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