2d CCRC Group Headquarters and Headquarters Squadron
- Activated 12 November 1943 at Cheddington, Bedfordshire [sic], using the personnel and equipment of the concurrently disbanded 2904th Replacement and Training Squadron (Bomb) (Provisional) [assigned to the Eighth Air Force 20 August 1943 and further assigned to 8th Bomber Command 22 August 1943]
- At Cluntoe by 26 February 1944
- Redesignated 29 July 1944 as Headquarters and Headquarters Squadron, 2d CCRC Group (Bomb Heavy Special)
- Moves to Boreham, Essex, circa 15 September 1944