How many casualties were there in World War 2?

1,555,308 from 1941-45 in the Pacific War.

1. Against US - 485,717
2. Against UK/Netherlands - 208,026
3. In China - 202,958
4. Against Australia - 199,511
5. French Indochina - 2,803
6. Against USSR - 7,483
7. Other overseas - 23,388
8. Japan proper - 10,543
9. Navy 1941/45 - 414,879

- Only one third of the military deaths occurred in actual combat, the majority being caused by illness and starvation.