VMF(aw)531

Marine Fighter Squadron (All Weather) 531, or VMF(AW)-531, was an aviation unit of the United States Marine Corps originally activated in 1942 as Marine Night Fighter Squadron 531 (VMF(N)-531), the first night fighter squadron in Marine Corps history. The squadron distinguished itself during World War II, flying night combat missions in the Pacific Theater with F6F-5N Hellcats and later F7F Tigercats. Postwar, the squadron transitioned to jet aircraft and was redesignated VMF(AW)-531, reflecting its all-weather capability. VMF(AW)-531 continued to serve during the Cold War era until it was deactivated in 1963.