The Erla Maschinenwerk aircraft factory that produced Messerschmitt Bf 109 fighter planes at the three locations of Heiterblick, Abtnaundorf and Mockau were important for warfare.
Prior to 1942, Leipzig had been considered relatively safe from potential aerial assaults because of the long flight route from Britain but after the attack on Kassel on 22–23 October 1943, it became clear that British bombers were able to reach central Germany.
In the night of 31 August to 1 September, the British RAF Bomber Command carried out minor attacks on the towns of Eutritzsch and Schönefeld causing four casualties.
Because the Germans did not expect an assault at this time, the Royal Air Force launched its attack in the early morning hours.
The route the bomber squadrons were following crossed over the continental coastline at the Zuiderzee, continued eastwards to Northern Germany and Berlin and turned southwards over the area of the city of Brandenburg.
This is a small number for such a heavy attack, because many inhabitants did not follow the instruction to stay in the cellars until the all-clear was given, and so escaped the firestorm flames.
Out of 92 departments of the University of Leipzig, 58 were hit and partially destroyed, including the first psychology laboratory, founded by Wilhelm Wundt.
In the afternoon of the same day, more than 200 bombers of the 8th US Air Force attacked industrial facilities in the northeast of the city, using about 700 tons of bombs.
According to a preliminary official report from 30 December 1944, the regions which were mainly hit were the ring around the inner city, the directly adjacent areas to the west, north and east, as well as all the southern suburbs.