Lineage. Constituted as 7 Pursuit Squadron (Interceptor) on 20 Nov 1940. Activated on 15 Jan 1941. Redesignated as: 7 Fighter Squadron on 15 May 1942; 7 Fighter Squadron, Single Engine, on 20 Aug 1943; 7 Fighter Squadron, Two Engine, on 6 Nov 1944; 7 Fighter Squadron, Single Engine, on 8 Jan