The XI Fighter Command was a command of the United States Army Air Forces. It was assigned to Eleventh Air Force, stationed at Adak Army Airfield, Alaska.

The command controlled fighter units in Alaska during the World War II Aleutian Islands Campaign under Eleventh Air Force. It was activated in March 1942 and inactivated on 31 March 1944.

Lineage Constituted as the 11th Interceptor Command on 8 March 1942Maurer indicates unit was constituted as the "XI" Interceptor Command. However, the unit was constituted and activated with an arabic number in its name. The use of roman numerals to designate Army Air Forces combat commands did not begin until September 1942. Activated in Alaska on 15 March 1942 Redesignated 11th Fighter Command on 15 May 1942 Redesignated XI Fighter Command c. 18 September 1942 Disbanded in Alaska on 31 March 1944

Assignments Eleventh Air Force, 15 March 1942 – 31 March 1944

Stations Elmendorf Field, Alaska, 15 March 1942 Adak Army Airfield, Alaska, 12 September 1943 – 31 March 1944

Components Group 343d Fighter Group: 15 March 1942 – 31 March 1944

Squadrons 11th Fighter Squadron: 7 June – 11 September 1942Maurer, Combat Squadrons, pp. 61-62 18th Fighter Squadron: 7 June – 11 September 1942Maurer, Combat Squadrons, p. 99 54th Fighter Squadron: 31 May – 11 September 1942Maurer, Combat Squadrons, pp. 223-224

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