The main cause of the Battle of Operation Barbarossa was Adolf Hitler's desire to conquer the Soviet Union and eliminate communism. Hitler believed that by invading the Soviet Union, he could secure more resources for Germany and eliminate the perceived threat of communism. The German invasion of the Soviet Union began on June 22, 1941, and marked the largest invasion in history, with over 4 million Axis troops attacking along a 1,800-mile front.
