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Definition of: air force
The air arm of a country's defense forces.
—United States Air Force The air force of the United States, administered by the Department of the Air Force under the Department of Defense; established in 1947 and organized in 1951 to consist of the Regular Air Force, the Air Force Reserve, and the Air National Guard of the United States. Until 1947 it was part of the Army, under the title of the United States Army Air Force. See ROYAL AIR FORCE, ROYAL CANADIAN AIR FORCE, ROYAL AUSTRALIAN AIR FORCE.
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