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. The derogatory term 'Bomber Mafia' was used before and after World War II by those in the military who did not share their belief, and who were frustrated by the insistence of the men that the heavy bomber should take a primary position in planning and funding.
After World War II, the 20 years of foundational work by the bomber mafia resulted in the separation of the United States Air Force from the Army to become an independent military arm. The bomber mafia's strategic doctrine, changed by war and experience, helped shape the mission of the new Air Force and its Strategic Air Command.
Many years later a related term "Fighter Mafia" described those within the Air Force that favoured light weight fighters good at dog-fighting instead of heavy missile-firing fighters.
Developed over the years 1926–1929 at Air Corps Tactical School (ACTS) at Langley Field in Virginia, a forward-looking doctrine of daylight precision bombing was promulgated by four instructors who argued that an enemy's army and navy could be defeated intact due to the destruction of industrial and military targets deep within enemy-held territory. This theory was first espoused by Italian General Giulio Douhet, though his ideas included the terror bombing of population centers that the American theorists eschewed. In contrast, American theorists devised a strategy of pin-point bombing that targeted the enemy economy and the production of weapons. Though unproven, the major attraction of this sort of strategic bombing doctrine was that a war was expected to be won relatively quickly, with minimal casualties, and that grinding, static trench warfare as seen in World War I could be avoided. In November 1932 when British Lord President of the Council Stanley Baldwin said "the bomber will always get through", he was talking about the terror bombing of cities. The US Bomber Mafia agreed with Baldwin only in that the bomber would prevail in its mission. They intended the mission to be against military and industrial targets, not populations.