Gotta take issue with the above two posts. Military historical sources consistently show that never less than 82-83% of the German military was deployed within the Soviet Union from June 1941. If Hitler had not invaded the USSR and had adhered to the Soviet/German nonaggression treaty, then it would have been a much different war in western Europe. The USSR could have won their war against Germany with or without Allied supplies.
Other than those killed at Pearl Harbor and offshore from U-boat warfare, America lost 8-10 civilians on the continent from Japanese balloon bombs floating onto our west coast. The Soviets lost 23-25 million citizens. Beware of "zero chance" assumptions of a nuclear war which could be a Very dangerous assumption. We are closer to nuclear war than at any time in world history, the Cuban crisis included. The Russian Federation has a few overseas bases, the US has over 450 OCONUS military bases, 119 within Japan alone. It is vital we do not lose our fear of war so "the sky does not fall". General aviation was grounded during the second war. 1945 was the year of greatest GA aviation accidents unsurpassed to our present day. Also, the greatest number of divorces. Should we slide into global war it will be likely go nuclear and everything you and I have accomplished will be gone and hopes for a vital future erased. I am an old man now but began by awareness at the bottom of a Montana missile tube, then an SSN and am now ex-State and DOD. In my youthful times I had a good case of denial and arrogance but now I fear for our future.