Industrial web theory
Encyclopedia
Industrial web theory is the military concept that an enemy's industrial power can be attacked at nodes of vulnerability, and thus the enemy's ability to wage a lengthy war can be severely limited, as well as his morale—his will to resist. The theory was formulated by American airmen at the Air Corps Tactical School
Air Corps Tactical School
The Air Corps Tactical School, also known as ACTS and "the Tactical School", was a military professional development school for officers of the United States Army Air Service and United States Army Air Corps, the first such school in the world. Created in 1920 at Langley Field, Virginia, it...

 (ACTS) in the 1930s.

The term "industrial web theory" cannot be found in any official United States Army Air Corps
United States Army Air Corps
The United States Army Air Corps was a forerunner of the United States Air Force. Renamed from the Air Service on 2 July 1926, it was part of the United States Army and the predecessor of the United States Army Air Forces , established in 1941...

 (USAAC) doctrine. Instead, the term was coined in the 1930s by Donald Wilson
Donald Wilson (general)
Donald Wilson was a United States Army Air Forces general during World War II.Wilson enlisted in the Maryland National Guard as a private in 1916 and served with it on the Mexican border and the Western Front during World War I before transferring to the United States Army Air Service. After the...

, an instructor at ACTS, to cover the concept then under development.

Theory

Prior theories of bombing were developed by Italian General Giulio Douhet
Giulio Douhet
General Giulio Douhet was an Italian general and air power theorist. He was a key proponent of strategic bombing in aerial warfare...

, British Sir Hugh Trenchard
Hugh Trenchard, 1st Viscount Trenchard
Marshal of the Royal Air Force Hugh Montague Trenchard, 1st Viscount Trenchard GCB OM GCVO DSO was a British officer who was instrumental in establishing the Royal Air Force...

 and American Colonel Billy Mitchell, each of whom advocated bombing an enemy's population centers as a method of shortening wars and thus saving more lives than were taken. This theory of area bombardment
Area bombardment
In military aviation, area bombardment is aerial bombardment targeted indiscriminately at a large area, such as a city block or an entire city.Area bombing is a form of strategic bombing...

 was taught at ACTS until 1934 but was unpopular in the press and in government. In 1922, a treaty to limit aerial bombardment of civilians was written and promoted by the United States, called The Hague Rules of Air Warfare, but it was not adopted. A similar international proposal was drafted in Tokyo in 1934 regarding the "Protection of Civilian Persons in Time of War," but this, too, was not ratified by treaty.

In 1935, ACTS instructors studied the probable results of area bombardment and concluded that not enough economic damage resulted from attacks on civilian population centers. Mitchell and the ACTS adjusted their bombing strategy to avoid direct attacks on civilians to be "more in keeping with our humanitarian ideals," though the possibility of attacks on general population centers was retained as a "last resort."

The industrial web theory was based on the idea that the economic strength of an industrial nation is composed of interdependent sectors such as manufacturing, mining, utilities and transportation. Any one of the sectors could be targeted with bombs to make the whole system suffer breakdowns and shortages. From 1935, instructors such as Robert M. Webster
Robert M. Webster
Robert Morris Webster was a United States Air Force major general who was an early advocate of daylight precision bombing as a war-winning strategy...

 and Muir S. Fairchild
Muir S. Fairchild
General Muir Stephen Fairchild was former vice chief of staff of the United States Air Force. He was born September 2, 1894 at Bellingham, Washington, and died March 17, 1950 at Fort Myer, Virginia.-Early service:Muir S...

 at ACTS studied the industrial interdependence of the United States as a model for targeting an aggressor enemy state. They drew up lists of optimal targets that would produce the greatest disruption for the least expenditure of bombs. Transportation and electric power industries were seen as vital targets, as well as iron ore mining and steel manufacturing.
With the loss of an enemy's economic strength through crippling attack on a vital sector, the theory held that the enemy's will to fight would collapse and that they would surrender or be forced to the bargaining table.

In 1934, six ACTS leaders appeared before the Howell Commission to advocate for an independent military air arm for the United States. Webster was joined by Donald Wilson
Donald Wilson (general)
Donald Wilson was a United States Army Air Forces general during World War II.Wilson enlisted in the Maryland National Guard as a private in 1916 and served with it on the Mexican border and the Western Front during World War I before transferring to the United States Army Air Service. After the...

, Robert Olds
Robert Olds
Robert Olds was a general officer in the United States Army Air Forces, theorist of strategic air power, and proponent of an independent United States Air Force. Olds is best known today as the father of Brig. Gen...

, Kenneth Walker
Kenneth Walker
Brigadier General Kenneth Newton Walker was a United States Army aviator and a United States Army Air Forces general who had a significant influence on the development of airpower doctrine. He posthumously received the Medal of Honor in World War II.Walker joined the United States Army in 1917,...

, Claire Chennault, and Harold L. George
Harold L. George
Harold Lee George was an American aviation pioneer who helped shape and promote the concept of daylight precision bombing...

—all six spoke about the critical opportunity that could be taken in attacking the cohesiveness of an enemy's industrial web. George submitted his opinion that a bomber with a 3000 mile range would be available within two years. The Howell Commission (which would develop into the Federal Aviation Commission and then into the Federal Aviation Administration
Federal Aviation Administration
The Federal Aviation Administration is the national aviation authority of the United States. An agency of the United States Department of Transportation, it has authority to regulate and oversee all aspects of civil aviation in the U.S...

) was interested in the industrial web theory and in the possibility that an independent air arm might stop an enemy from making war. They authorized the General Headquarters Air Force (GHQ Air Force) as a semi-independent arm within the United States 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...

.

Industrial targets

Traditional military targets had primarily been fielded enemy forces and concentrations of supplies held in rear areas. After aerial bombardment became a possibility, tactical targets such as communications (supply and signal lines) and troop concentrations became the focus of bombing efforts. The industrial web theory instead targeted choke points and bottlenecks in an enemy's economic and industrial base, deep inside the interior of an enemy nation. If precision bombing could be used to destroy an industrial node with resulting paralysis of enemy industry, the particular node was given serious consideration as a target.

Suitable targets included railroad lines, junctions and marshaling areas, oil drilling and fuel refining industries, iron ore mining and transportation, steel refining and manufacturing industries, electric power generation and distribution, and, in general, all forms of transportation.

Enemy morale

A hold-over element of area bombardment strategies that was incorporated into the industrial web theory was that enemy morale would deteriorate in the face of bombing attacks that vitally reduced an enemy's economy. The enemy's will to resist would fail, and the enemy would surrender or would at least be forced to end the war by diplomatic means. In 1939, Fairchild said of a theoretical enemy that the "nation-wide reaction to the stunning discovery that the sources of the country's power to resist and to sustain itself are being relentlessly destroyed, can hardly fail to be decisive."

Weapons development

Before the development of aerial warfare
Aerial warfare
Aerial warfare is the use of military aircraft and other flying machines in warfare, including military airlift of cargo to further the national interests as was demonstrated in the Berlin Airlift...

, especially the long-range heavy bomber
Heavy bomber
A heavy bomber is a bomber aircraft of the largest size and load carrying capacity, and usually the longest range.In New START, the term "heavy bomber" is used for two types of bombers:*one with a range greater than 8,000 kilometers...

, large-scale attacks on an enemy's industrial might were impossible. No military weapon system was able to penetrate deep into enemy territory and reliably deliver the quantity of munitions required to limit the enemy's ability to wage war. Zeppelin
Zeppelin
A Zeppelin is a type of rigid airship pioneered by the German Count Ferdinand von Zeppelin in the early 20th century. It was based on designs he had outlined in 1874 and detailed in 1893. His plans were reviewed by committee in 1894 and patented in the United States on 14 March 1899...

 raids during World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 came near to achieving this capability—their bomb load and range were greater than any other aircraft—but they were very vulnerable to weather and attack.

Bomber
Bomber
A bomber is a military aircraft designed to attack ground and sea targets, by dropping bombs on them, or – in recent years – by launching cruise missiles at them.-Classifications of bombers:...

s and Zeppelins in World War I proved vulnerable to pursuit aircraft
Fighter aircraft
A fighter aircraft is a military aircraft designed primarily for air-to-air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets...

, so each of the belligerents quickly moved to a strategy of bombing at night when the attackers were much safer. However, night bombing suffered from imprecision in targeting. As early as 1926, American airmen noted that small targets which were difficult to see at night would have to be attacked in daylight hours. Still, night bombing was emphasized. In 1932, the staff at ACTS moved to embrace daylight bombing as the primary method to get the greatest bomb tonnage on target. To survive this kind of risky offensive action, the bombers would have to be flying higher than their pursuers, and higher than the effective range of anti-aircraft artillery. ACTS bombing proponents began calling for higher service ceilings for their bombers: 15000 foot for light bombers and 18000 foot for the heavy bombers.

As well, bomber strategy began to emphasize the mutually supporting defensive fire of multiple machine guns found within a squadron of bombers flying in close formation. It was thought that bombers in formation were too difficult a target for defensive aircraft. Kenneth Walker lectured to his students in the Bombardment Section of ACTS: "Military airmen of all nations agree that a determined air attack, once launched, is most difficult, if not impossible to stop."

With the first successful trials of the Y1B-17 Flying Fortress service test aircraft in 1937, the ACTS was convinced that this aircraft could prove their theories. The new bomber could fly above 35000 foot, was faster and could carry a larger bomb load than any previous bomber. Its potential for use against targets deep within an enemy nation was far greater than any previous aircraft. These qualities combined with its massive amount of defensive firepower brought ACTS theorists to conclude that the B-17 bomber fleet was invincible, that it was indeed true that "The bomber will always get through
The bomber will always get through
The bomber will always get through was a phrase used by Stanley Baldwin in 1932, in the speech "A Fear for the Future" to the British Parliament...

", a phrase uttered in 1932 by Stanley Baldwin, 1st Earl Baldwin of Bewdley
Stanley Baldwin
Stanley Baldwin, 1st Earl Baldwin of Bewdley, KG, PC was a British Conservative politician, who dominated the government in his country between the two world wars...

.

With increasing altitude, the circular error of probability
Circular error probable
In the military science of ballistics, circular error probable is an intuitive measure of a weapon system's precision...

 (CEP) also increased, resulting in decreased damage to the target. Bombs dropped from high altitudes would fall over a wide area below, and in order for the bombers to significantly damage a target, the number of bombers would have to be prohibitively large. The Norden bombsight
Norden bombsight
The Norden bombsight was a tachometric bombsight used by the United States Army Air Forces and the United States Navy during World War II, and the United States Air Force in the Korean and the Vietnam Wars to aid the crew of bomber aircraft in dropping bombs accurately...

, tested in 1933, held the promise of much greater accuracy in high altitude bombing, and helped the ACTS theorists conclude that pinpoint bombing was possible.

Results

The industrial web theory was put into concrete plan form by the Air War Plans Division
Air War Plans Division
The Air War Plans Division was an American military organization established to make long-term plans for war. Headed by Harold L. George, the unit was tasked in July 1941 to provide President Franklin D...

: Kenneth Walker, Laurence S. Kuter
Laurence S. Kuter
General Laurence Sherman Kuter was a Cold War-era U.S. Air Force general and former commander of NORAD...

 and Haywood S. Hansell
Haywood S. Hansell
Haywood Shepherd Hansell Jr., was a general officer in the United States Army Air Forces during World War II, and later the United States Air Force...

, led by Harold L. George. The plan was submitted for approval to the Joint Army-Navy Board in mid-1941 as AWPD-1, standing for Air War Plans Division, plan number one. A refinement to AWPD-1 came in August 1942 after eight months of direct American involvement in World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. The new plan was called AWPD-42 and was submitted to the Combined Chiefs of Staff
Combined Chiefs of Staff
The Combined Chiefs of Staff was the supreme military command for the western Allies during World War II. It was a body constituted from the British Chiefs of Staff Committee and the American Joint Chiefs of Staff....

. Neither AWPD-1 nor AWPD-42 were approved as combat battle plans or strategies—they were simply accepted as guidelines for the production of materiel
Materiel
Materiel is a term used in English to refer to the equipment and supplies in military and commercial supply chain management....

 necessary to carry out the plans intended or subsequent plans. Finally in 1943, a plan was hammered out in meetings between American and British war planners. The industrial web theory would be put into practical plan form with the Anglo-American Combined Bomber Offensive
Combined Bomber Offensive
The Combined Bomber Offensive was an Anglo-American offensive of strategic bombing during World War II in Europe. The primary portion of the CBO was against German Air Force targets which was the highest priority from June 1943 to 1944...

 (CBO).

In the event, the industrial web theory failed to achieve its goals. Various targets were chosen and attacked serially, without evaluating the results in light of their interdependence. American bombing leaders maintained that precision attacks were being carried out, but in early 1944 poor weather over Europe prevented visual sighting, and bombs were dropped indiscriminately by inaccurate radar methods through cloud cover, resulting in general population destruction. By September 1944, all pretense to precision was abandoned when General 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...

 ordered the area bombing of Berlin
Berlin
Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

. By that time, bombing was not so much strategic as it was tactical, to soften Germany for invasion by ground troops. Thousand-bomber raids were not able to diminish industrial production of materiel in time to prevent invasion. When arms production in Germany finally faltered in the third quarter of 1944, only 30% of the total of eventual bomb tonnage had been dropped on the country—this after the French-German border had been reached and the war on the ground had seen its decisive breakthrough. Germany was conquered by invasion; it did not surrender as a result of bombing. The morale of the enemy was not significantly affected—no population that was bombed in World War II lost their will to resist, and it was the Emperor, not the people, who decided Japan must surrender.

Despite its failures in practice, the strategic bombing concept of targeting crucial industrial bottlenecks became in 1947 the first core doctrine of the independent United States 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...

. Strategic bombing proponents continued to promote the doctrine into the nuclear age, forming the Strategic Air Command
Strategic Air Command
The Strategic Air Command was both a Major Command of the United States Air Force and a "specified command" of the United States Department of Defense. SAC was the operational establishment in charge of America's land-based strategic bomber aircraft and land-based intercontinental ballistic...

 to carry out a vision modified to fit the needs of 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...

 and the threat of nuclear warfare
Nuclear warfare
Nuclear warfare, or atomic warfare, is a military conflict or political strategy in which nuclear weaponry is detonated on an opponent. Compared to conventional warfare, nuclear warfare can be vastly more destructive in range and extent of damage...

.

In the modern United States, Air Force strategic doctrine was redirected in the 1980s by Colonel John A. Warden III
John A. Warden III
John Ashley Warden III is a retired colonel in the United States Air Force. Warden is a graduate of the United States Air Force Academy. His Air Force career spanned 30 years, from 1965 to 1995, and included tours in Vietnam, Germany, Spain, Italy, and Korea, as well as many assignments within...

 who developed his Strategic Ring Theory
Warden's Five Rings
Warden's Five Rings represent a theory of military strategic attack, based on five levels of system attributes. They are named in honor of Col. John A...

, a concept of aerial attack in which a number of enemy nodes are attacked simultaneously to result in "physical paralysis" or "strategic paralysis." Warden's theory added fielded enemy military units and their leadership to the industrial web theory, and attacks on civilians were at most indirect ones, collateral damage
Collateral damage
Collateral damage is damage to people or property that is unintended or incidental to the intended outcome. The phrase is prevalently used as an euphemism for civilian casualties of a military action.-Etymology:...

, the result of targeted military and industrial nodes. However, USAF doctrine continues to emphasize the demoralization of the enemy: "Strategic attack objectives often include producing effects to demoralize the enemy’s leadership, military forces, and population, thus affecting an adversary’s capability to continue the conflict."

See also

  • Aerial bombardment and international law
    Aerial bombardment and international law
    Air warfare, must comply with laws and customs of war, including international humanitarian law by protecting the victims of the conflict and refraining from attacks on protected persons....

  • Bomber mafia
    Bomber Mafia
    The Bomber Mafia were a close-knit group of American military men who believed that long-range heavy bomber aircraft in large numbers were able to win a war...

  • Dehousing
    Dehousing
    On 30 March 1942 Professor Frederick Lindemann, Baron Cherwell, the British government's chief scientific adviser, sent to the British Prime Minister Winston Churchill a memorandum which after it had become accepted by the Cabinet became known as the dehousing paper.Also known as the "dehousing...

    , British area bombardment doctrine
  • Strategic bombing during World War II
    Strategic bombing during World War II
    Strategic bombing during World War II is a term which refers to all aerial bombardment of a strategic nature between 1939 and 1945 involving any nations engaged in World War II...

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