Formerly the airborne division of the United States Army(noun)
WordNet. Princeton University. 2010.
Use "air corps" in a sentence
"Resigning from the air corps in 1928, Aldrin Sr. became a stockbroker."
"The whole of Richthofen's air corps was used, together with all available Ju 52 squadrons and long-range bombers from airfields as far away as Orel and Kerch."