On 28 July 1967, the combined facilities of Fort Stewart and Hunter Army Airfield were re-designated the United States Army Flight Training Center. Included was the Attack Helicopter Training Department ("Cobra Hall"), the Army's first attack helicopter school whose purpose was to train pilots in the AH-1G Cobra, the world's first purpose-built attack helicopter. The first class of Republic of Vietnam Air Force students began Advanced helicopter training at Hunter on 13 March 1969. As the number of Vietnamese flight students increased, flight training for U.S. Army officers and warrant officers at Hunter was gradually phased out, ending on 16 June 1970.