Arlington National Cemetery in Arlington County, Virginia

Arlington County, Virginia

Arlington County is a county in the Commonwealth of Virginia. The land that became Arlington was originally donated by Virginia to the United States government to form part of the new federal capital district. On February 27, 1801, the United States Congress organized the area as a subdivision of...

, is a military cemetery

United States National Cemetery

"United States National Cemetery" is a designation for 146 nationally important cemeteries in the United States. A National Cemetery is generally a military cemetery containing the graves of U.S. military personnel, veterans and their spouses but not exclusively so...

 in the United States of America, established during 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...

 on the grounds of Arlington House

Arlington House, The Robert E. Lee Memorial

Arlington House, The Robert E. Lee Memorial, formerly named the Custis-Lee Mansion, is a Greek revival style mansion located in Arlington, Virginia, USA that was once the home of Confederate General Robert E. Lee. It overlooks the Potomac River, directly across from the National Mall in Washington,...

, formerly the estate of the family of Confederate

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...

 general 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....

's wife Mary Anna (Custis) Lee

Mary Anna Custis Lee

Mary Anna Randolph Custis Lee was the wife of Confederate General Robert E. Lee.-Biography:Mary Anna Custis Lee was the only surviving child of George Washington Parke Custis, George Washington's step-grandson and adopted son and founder of Arlington House, and Mary Lee Fitzhugh Custis, daughter...

, a great grand-daughter of Martha Washington

Martha Washington

Martha Dandridge Custis Washington was the wife of George Washington, the first president of the United States. Although the title was not coined until after her death, Martha Washington is considered to be the first First Lady of the United States...

. The cemetery is situated directly across the Potomac River

Potomac River

The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...

 from the Lincoln Memorial

Lincoln Memorial

The Lincoln Memorial is an American memorial built to honor the 16th President of the United States, Abraham Lincoln. It is located on the National Mall in Washington, D.C. The architect was Henry Bacon, the sculptor of the main statue was Daniel Chester French, and the painter of the interior...

 in Washington, D.C.

Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....

 It is served by the Arlington Cemetery

Arlington Cemetery (Washington Metro)

Arlington Cemetery is a side platformed Washington Metro station in Arlington, Virginia, United States. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority . The station provides service for only the Blue Line, and is located at the entrance...

 station on the Blue Line of the Washington Metro

Washington Metro

The Washington Metro, commonly called Metro, and unofficially Metrorail, is the rapid transit system in Washington, D.C., United States, and its surrounding suburbs. It is administered by the Washington Metropolitan Area Transit Authority , which also operates Metrobus service under the Metro name...

 system.

In an area

Area

Area is a quantity that expresses the extent of a two-dimensional surface or shape in the plane. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat...

 of 624 acres (2.5 km²), veterans and military casualties from each of the nation's wars are interred in the cemetery, ranging from 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...

 through to the military actions in 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...

 and Iraq.