what world war 2 battle did the most damage to the Germans?

The Battle of Stalingrad, fought from August 1942 to February 1943, inflicted the most damage on the Germans during World War II. This pivotal battle marked a turning point in the war, with the German 6th Army suffering catastrophic losses, including around 300,000 troops killed or captured. The defeat not only weakened the German military significantly but also boosted Soviet morale and marked the beginning of a series of Soviet offensives that would push the Germans back toward their own borders.