European theatre of World War II
The group was briefly at RAF Bushey Hall before moving to Debden in late September, 1942. They served in combat over Europe from October 1942 to April 1945 and was the longest serving USAAF fighter group in the European theatre of World War II. It was assigned to VIII Fighter Command, September 12, 1942 and the 4th Air Defense (later, 65th Fighter) Wing, July 1943 – November 1945.