It was last assigned to the 34th Bombardment Group at Sioux Falls Army Air Field, South Dakota, where it was inactivated on 28 August 1945.

[1][2] After the Pearl Harbor attack the squadron began antisubmarine patrols off the Northeast coast of the United States, but soon became part of Western Defense Command and moved to Pendleton Field, Oregon.

Its ground echelon moved to the port of embarkation on 1 April 1944,[2][5] while the air echelon began its overseas movement on 31 May 1944, taking the southern ferry route, from Florida to Trinidad, Brazil, West Africa and Marrakesh arriving at RAF Valley, Wales.

[2][5] The squadron helped to prepare for Operation Overlord, the invasion of Normandy, by bombing airfields in France and Germany, and supported the June landings by attacking coastal defenses and communications.

It supported ground forces at Saint-Lô in late July and struck V-1 flying bomb launch sites, gun emplacements, and supply lines throughout the summer of 1944.

Targets included marshaling yards in Ludwigshafen, Hamm, Osnabrück, and Darmstadt; oil centers in Bielefeld, Merseburg, Hamburg, and Misburg; factories in Berlin, Dalteln, and Hanover; and airfields in Münster, Neumünster, and Frankfurt.

[5] After V-E Day the squadron flew missions carrying food to flooded areas of the Netherlands and transported prisoners of war from German camps to Allied centers.

[5] The squadron reassembled at Sioux Falls Army Air Field, South Dakota, where it was inactivated on 28 August 1945.