Russia sucks, if we were to throw thousands upon thousands of 'unarmed' soldiers to the Western front, the Western front of the Nazis would fail too.
U.S.A was definitely the winning force of WWII, Britain, and Russia were really good Allies though.
But in truth, the real defeat for the Nazis was Hitler his self.
This is an actual quote from Hitler *not really*
"Lets see, I'm going to war with Britain, and if I just hold strong, I could easily own all of Western Europe and North Africa, and then continue East. O WAIT I GO TO WAR WITH RUSSIA NOW EVEN THO I ALREDY FITE BRITAN LOLOL AND ALLY MYSELF WITH JAPAN WHICH ONLY HURTS ME IN ANY CIRCUMSTANCE LOLOL *suicide*"
Also if it's an American history book, it won't care about the damn Russians, British, Canadians, Germans, or even Jews. It'll just say *We went there cause of this, this, and this, we did this, this, and this, and we kicked this back into the stone age.*