During the invasion code named "Operation Barbarossa" it was a critical point for the German Nazis and Soviet Union because in the beginning of the invasion the Soviet Union lost half a million men to the Nazis as prisoners, along with most of the Soviet air force, and large quantities of supplies due to a sudden Blitzkrieg attack done by the German Nazis, but as the invasion continued the German Nazis had to face the "Scorched Earth" tactics of the Soviet Union and the unbearable weathers of Russia and many died from coldness, diseases, and hunger. The turning point was when Hitler sent half of his troops to capture Stalingrad, the Germans weren't able to surround the city due to its size and in the following months the Germans and Soviets fought a endless battle over Stalingrad, and after 3 months the Germans failed to capture it and ended trapping themselves in the city, and on the 31st of January 1943 the German General von Paulus surrendered along with 24 other Generals and 91,000 soldiers leaving 150,000 of their comrades dead in the ruined ashes of Stalingrad...
-Would the results of war be different if Hitler would have approached Stalingrad differently?
-What if Hitler listened to General von Paulus and retreated his troops from Stalingrad, would he have benefited from the war?
( From the reading "Global War" : pg. 12, 20, and 22 )