[EaSyTrIcK50]

They contributed mostly because they were ass ounded at the begining of the war. America didn't have to get involved, but they did. Plus Americans didn't have much experience in war at the time. Just a bunch of kids with maybe a couple weeks of combat training. Germans and the axis had been training their men for 20 years. And America wasn't putting all their forces in one place like the Russians. Americans were everywhere. Don't even F*cking tell me the Russians did more in the war. If the Russians would have failed, then America and Britian and the rest of the allies would have mopped the floor with the Nazis in Russia.