The main unit in this action was the American Fifteenth Air Force, with a base in Foggia in the south of Italy.

The largest unit that took part was the American Fifteenth Air Force, based in Foggia in the south of Italy.

[6] Though officially only military and industrial targets were picked – factories, bridges, airport, ammunition depots, Axis barracks and garrisons - the precision of bombing was notoriously bad.

Bombed areas of the wider Belgrade metropolis included Dorćol, which was mostly destroyed, together with parts of Vračar, Pašino Brdo, and Dušanovac, all suburbs at the time, which contained no factories or military targets.

2, the fabrics factory of Vlada Ilić in Karaburma, the faculty of technical engineering, Vajfert's brewery, and the University campus.