the U.S. department consisting of practically all military aviation forces, established July 26, 1947.

( lowercase ) a similar department in any military organization.

( lowercase ) (formerly) the largest unit in the U.S. Army Air Forces.

( lowercase ) a unit of U.S. Air Force command between an air division and an air command.

( sometimes lowercase ) the military unit of a nation charged with carrying out military operations in the air.

British . Royal Air Force.

noun

flying force , flying corps , aviation service