Flak corps
MILITARY UNIT CLASSIFICATION WITHIN THE GERMAN AIR FORCE
Flakkorps; I. Flakkorps; 2nd Flak Corps (Germany); II Flak Corps (Germany); III. Flakkorps
A flak corps () was a massed anti-aircraft (AA) artillery formation employed by the Luftwaffe for anti-aircraft, antitank, and fire support operations in World War II. A Flakkorps was a flexible organization that was made up of a varying number of AA regiments, brigades, or divisions.