Activated on 1 October 1942 at RAF Duxford, England by special authority of the USAAF by Eighth Air Force.

Assigned to VIII Fighter Command, equipped with a mixture of United States personnel reassigned from the 31st and 52d Fighter Groups, and Americans transferred from the Royal Air Force who had volunteered to join the RAF prior to the United States entry into the European War, 11 December 1941.

Deployed to French Morocco and assigned to Twelfth Air Force where the unit engaged in combat during the North African campaign.

Unit designation allocated to Pennsylvania Air National Guard, re-designated as 146th Fighter Squadron, 24 May 1946.

This article incorporates public domain material from the Air Force Historical Research Agency