In August 1942, Hitler decided to invade Stalingrad, an industrial center that would give him command of crucial rail transportation. But the Russians, both soldiers and residents, fought for every bit of their land. In February 1943, the Germans surrendered after 260 000 were killed and 110 000 taken prisoner. This battle, with the battle of Kursk, gave the Russians power and initiative.
In October 1942, the Germans attacked the British stationed at El Alamein, with the goal of stopping the British advance and conquering Egypt. The British Eighth Army stopped Rommel and his German army and defeated the Germans and Italians in northern Africa.
On June 6, 1944, the allies had collected two million men and five thousand vessels for their invasion of Normandy. They landed on the beaches and made their way inland, battling German resistance troops on the way. By mid-August, Paris was liberated after uprising against the Germans. In a strategic sense, the successful invasion in Normandy was a psychological blow to the German occupation of Europe. It called into question the German Army's ability to control western Europe, increased inhabitant's activity against enemies' occupation, and motivated the spirits of all those fighting against Nazi domination.
I think these battles all had a huge influence on the outcome of the war because they were all