Germany was the greatest war-waging nation. She brought 5 great nations to their knees but as soon as the Americans decided to enter fully she was destined to fall. As far as war-waging goes I got to hand it to Nazi-Germany. As for America as the great liberator, I'd say the combination of Britain and America was what sealed the deal. They were the financial powerhouses, lending money to other countries, and battled well. Soviet also, obviously, played a huge part, with their endless number of soldiers. But anyway, my point, if it had been a battle between Nazi Germany and USA, The Nazis would have won. The only reason they didn't is because they had shit allies and had to battle Britain, Soviet, France, smaller countries with resistance movements, basically they took the World head on! Not an easy task but they almost freaking did it.