The German main force crossed the Danube River on 23 August 1942, the German main force crossed the Danube River on 23 August 1942, the German main force crossed the Danube River and launched a comprehensive offensive on Stalingrad on 23 August 1942, the world-famous Stalingrad defense battle began on 12 July 1942, the defeated German forces in the Battle of Moscow, after half a year of interruption, Hitler gathered 237 divisions and gathered to the Soviet battlefield. The German forces abandoned the comprehensive offensive plan, headed the southern line, occupied the famous Stalingrad defense battle, from the southeastern side of Moscow as the main strategic target. The German troops attempted to quickly attack Stalingrad and the Caucasus, to cut off the Volga River with 237 divisions, and