401st Fighter Squadron

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401st Fighter Squadron
401st Fighter Squadron - Emblem - World War II.png
Emblem of the 401st Fighter Squadron
Active 1943-1945
Country United States
Branch United States Air Force
Type Fighter

The 401st Fighter Squadron is an inactive United States Air Force unit. Its last was assigned to the 370th Fighter Group, Ninth Air Force, stationed at Camp Myles Standish, Massachusetts. It was inactivated on 7 November 1945.


Established in mid-1943 at Westover Field, Massachusetts, equipped with P-47 Thunderbolts. Trained under I Fighter Command in New England, being deployed to the European Theater of Operations (ETO), and assigned to Ninth Air Force in England. It's ETO fuselage code was "9D". Was converted from P-47s to P-38 Lightnings upon arrival in the ETO.

From British airfields the squadron flew sweeps over Occupied France, attacking radar installations and flak towers, and escorted bombers that attacked bridges and marshalling yards in France as the Allies prepared for the invasion of the Continent. The group provided cover for Allied forces that crossed the Channel on 6 June 1944, and flew armed reconnaissance missions over the Cotentin Peninsula until the end of the month. On 17 July 1944, napalm incendiary bombs were dropped for the first time in war on a fuel depot at Coutances, near St. Lô, France.

After the D-Day invasion, squadron moved to its Advanced Landing Ground (ALG) at Cardonville, France (ALG A-3) on 20 July to support the Allied ground advance across France and into Germany. Flew armed reconnaissance during the Battle of the Bulge, attacking warehouses, highways, railroads, motor transports, and other targets.

Converted to P-51 Mustangs during February - March 1945. Bombed bridges and docks in the vicinity of Wesel to prepare for the crossing of the Rhine, and patrolled the area as paratroops were dropped on the east bank on 24 March Supported operations Of 2d Armored Division in the Ruhr Valley in Apr. Flew last mission, a sweep over Dessau and Wittenberg, on 4 May 1945.

Returned to the United States during September–November 1945, and was inactivated on 7 November 1945. The unit was re-designated as the 173d Fighter Squadron and allocated to the Nebraska Air National Guard on 24 May 1946.


  • Constituted 401st Fighter Squadron on 22 Jul 1943
Activated on 25 Jul 1943
Inactivated on 10 Nov 1945





 This article incorporates public domain material from the Air Force Historical Research Agency website http://www.afhra.af.mil/.

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