Color photograph of a P-51D Mustang of the 336th Fighter Squadron, 4th Fighter Group in 1944. (United States Air Force via National Archives.)
Tag - 4th fg
A lineup of P-51 Mustang fighters of the 359th Fighter Group, 20th Fighter Group, 353rd Fighter Group, and 357th Fighter Group photographed at RAF Debden, home of the 4th Fighter Group. (United States Army Air Forces Photograph.)