 The squadron was activated as the 325th Fighter Squadron, one of the original squadrons of the 327th Fighter Group.It performed air defense missions, but became an operational training unit until February 1944, and afterward served as a replacement training unit until being disbanded in April 1944.The squadron was reconstituted as the 325th Fighter-Interceptor Squadron and activated at Travis Air Force Base in April 1953, where it was equipped with the radar equipped and Mighty Mouse rocket armed North American F-86D Sabres.