The document summarizes key events of the Battle of Stalingrad during World War II. It describes how in September 1942, German forces under General Paulus advanced on the city of Stalingrad, but they were eventually surrounded by Soviet forces. After intense street-to-street fighting over the following months, the Germans were trapped in Stalingrad with no possibility of resupply or retreat. By the end of January 1943, over 90,000 German troops surrendered, marking a major defeat. The failure at Stalingrad depleted German forces and halted their advance in Russia, shifting the tide of the war.