date the air force was established
The United States Air Force was established as an independent service on 18 September 1947; it traces its origin to the formation of the Aeronautical Division, U.S. Signal Corps in 1907 and was part of the Army before becoming an independent service.he United States Air Force was established as an independent service on 18 September 1947; it traces its origin to the formation of the Aeronautical Division, U.S. Signal Corps in 1907 and was part of the Army before becoming an independent service.