[iPhantom]

Except that USA wasn't a neighbor of Germany so their main way of attack was by bombing them. It doesn't work that way with neighbor countries because as you can see, they BOMB you too. You have to use your infantry when you're in that situation.

The US has never played war that way because they never were in that position. Don't come at talk to me about war tactics if you don't count the position of the territory to attack. Didn't your army teach you that?

The US wasn't the key factor, they were an assistance. Whether the USA had intervened or not, The Nazi would have fallen in Stalingrad and Soviets would counterattack. 80% of Nazi's best military were there in Stalingrad. Soviet's role was the main one in the whole war.