Final answer:
During the Battle of Stalingrad, the Nazi 6th Army was surrounded and forced to surrender to the Soviet Red Army. This battle was a turning point in World War II.
Step-by-step explanation:
During the Battle of Stalingrad, the Nazi 6th Army was surrounded by the Soviet Red Army and eventually forced to surrender. The Germans were trapped in the city and resupply was limited, leading to their eventual defeat. This battle was a turning point in World War II, as it halted the German advance into the Soviet Union and marked the first major defeat for Hitler's Germany.