The most severe bombing of Sofia ever occurred on March 30, 1944. Some 370 american heavy bombers flied upon Sofia destroying 3575 buildings. The casualties were relatively modest due to the preliminarily evacuation of the civilians. The target of the bombing, as the image clearly depicts, were neither military installations, nor armed forces, but the very historical downtown of the city of Sofia.
The bombing raids in 1943-1944 resulted in the death of 1,374, with an additional 1,743 being injured. 12,564 buildings were damaged (of which 2,670 completely destroyed). 60 motor cars and 55 trailers were also destroyed.