 Another source from Hilary Conroy claims that a total of 447,000 Japanese soldiers died in China during the Second Sino-Japanese War.Of the 1,130,000 Imperial Japanese Army soldiers who died during World War II, 39 percent died in China.Then in "War Without Mercy", John W. Dower claims that a total of 396,000 Japanese soldiers died in China during the Second Sino-Japanese War.