Soviet Union Military dead: 10,600,000 Civilian Dead: 11,500,000
United Kingdom Military dead: 307,700 Civilian Dead: 61,700
United States Military dead: 407,300 Civilian Dead: 11,200

They took the hardest hits yet most of the credit still goes to the good ol' USA. If you take a look at those figures you'll see who really won WW2.