Cost of War Germany- 3 million combat deaths (3/4ths on the eastern front) Germany- 3 million combat deaths (3/4ths on the eastern front) Japan – over 1.5 combat deaths; 900,000 civilians dead Japan – over 1.5 combat deaths; 900,000 civilians dead Soviet Union - 13 million combat deaths Soviet Union - 13 million combat deaths U.S.
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