66th Fighter Squadron (Twin Engine); 66th Fighter Squadron; 66th Fighter Squadron; 66th Fighter Squadron, Single Engine

Constituted as 66th Pursuit Squadron (Interceptor) on 20 Nov 1940. Activated on 15 Jan 1941. Redesignated: 66th Pursuit Squadron (Interceptor) (Twin Engine) on 31 Jan 1942; 66th Fighter Squadron (Twin Engine) on 15 May 1942; 66th Fighter Squadron on 1 Jun 1942; 66th Fighter Squadron, Single Engine on 21 Aug 1944. Inactivated on 7 Nov 1945.

Insignia approved on 2 Jan 1942.

Stations. Mitchell Field, NY, 15 Jan 1941; Hartford, CT, 18 Aug 1941; Farmingdale, NY, 14 Dec 1941; Quonset Point, RI, 27 Feb 1942; Hillsgrove, RI, 8 Jun-5 Jul 1942; Beit Daras, Palestine, 19 Aug 1942; Egypt, 16 Sep 1942; Gambut, Libya, 13 Nov 1942; El Gazala, Libya, 15 Nov 1942; Belandah, Libya, 11 Dec 1942; Hamariet, Libya, 12 Jan 1943; Darragh, Libya, 18 Jan 1943; Zuara, Libya, 24 Feb 1943; Nefatia, Tunisia, 5 Mar 1943; Ben Gardane, Tunisia, 7 Mar 1943; Soltane, Tunisia, 20 Mar 1943; Medenine, Tunisia, 4 Apr 1943; Cekira, Tunisia, 11 Apr 1943; El Djem, Tunisia, 14 Apr 1943; El Hani, Tunisia, 21 Apr 1943; Bow Grara, Tunisia, 20 May 1943; Malta, 27 Jun 1943; Pachino, Sicily, 19 Jul 1943; Scordia, Sicily 30 Jul 1943; Gioia del Colles, Italy, c. 25 Sep 1943; Foggia, Italy, c. 1 Oct 1943; Amendola, Italy, 27 Oct 1943; Cercola, Italy, c. 1 Mar 1944; Alto, Corsica, 28 Mar 1944; Ombrone, Italy, 11 Sep 1944; Grosseto, Italy, 25 Sep 1944; Villafranca di Verona, Italy, 29 Apr 1945; Grosseto, Italy, 8 May 1945; Bagnoli, Italy, 15 Jul-5 Aug 1945; Drew Field, FL, 23 Aug-7 Nov 1945.