On 1 January 1951, the Air Defense Command was reestablished at Mitchel Air Force Base, under the command of Commanding General Ennis Whitehead, later lieutenant general. One week later the command was moved to Colorado Springs. The Ent Air Force Base, named for Major General Uzal Girard Ent, opened on 8 January 1951. The Air Defense Command (ADC) inherited 21 fighter squadrons from Continental Air Command (CONAD) and 37 Air National Guard (ANG) fighter squadrons assigned an M-Day air defense mission. It was also assigned four Air Divisions (Defense). General Benjamin W. Chidlaw was the base commander beginning 29 July 1951 and commander of the Air Defense Command from 25 August 1951 and until 31 May 1955.