The bombing campaign between january 1943 and may 1945 caused a severe oil short - age in germany and wrecked its

It wrecked the railroad system and destroyed numerous aircraft producing plants.

This made it extremely difficult to traverse the land and bring supplies to fronts and help the war. The Germans still wanted to fight and were eager to do it but the shortages because of logistic problems caused to be insurmountable and they started losing an all fronts and became pressured from all sides, mostly from Russians.