[1][2] The air echelon arrived at Manbulloo Airfield, in the Australian Northern Territory by the end of the month.

[1] For the remainder of its stay in Australia, the squadron and the rest of the 380th Group would be attached to the Royal Australian Air Force (RAAF).

In August 1943, it participated in a series of raids on oil refineries in Balikpapan, Borneo in what at the time was the longest bombing mission flown by an Army Air Forces bomber unit.

During April and May 1944, the unit conducted a series of raids on enemy airfields in western New Guinea to support landings in the Hollandia area, for which it was awarded a second DUC.

All reserve corollary units were mobilized for the Korean war,[6] and the squadron was called to active duty in May 1951.

[7][8] The 531st was activated at Plattsburgh Air Force Base, New York on 1 May 1959 as the fourth squadron of the 380th Bombardment Wing.

[8] This article incorporates public domain material from the Air Force Historical Research Agency