Of course it was USSR who crashed the Nazi Germany's military during WWII. However, it was a joint effort. Remember 1941, when all the Soviet industries were destroyed. US sent in ammunition, food, planes, tanks, clothing, trucks, etc, everything needed to equip and sustain entire armies. Also, US engagement with Japan prevented it from opening a second front on the China's border with USSR in 1942 or 43. Were this to happen, the Soviet Union might have fallen. Let's not argue about the contributions each country made, especially given the fact that Western Europe, with the exception of Britain did nothing the defeat the absolute evil.
Islamic State militants blow up ancient Arch of Triumph in Palmyra (Reuters)
from the article: History and Hussein's hanging