39th Service Group Headquarters and Headquarters Squadron
- Arrived at Firth of Clyde 6 October 1942 (sailed from New York) [one officer as rear detachment arrives Belfast 25 November 1942 having sailed from New York later]
- Assigned to Eighth Air Force 9 October 1942; further assigned to 8th Bomber Command 13 March 1943 and to VIII Air Force Composite Command 20 December 1943
- Initially located in Bedfordshire and Cambridgeshire in England
- Moved to Mughaberry per 20 December 1943 movement order
- At Harrington, Cumberland, by 31 March 1944
