| World War I Casualties | |||
| Country | Total Population | Military Killed or Missing | Total Civilian Deaths |
| Germany | 67,000,000 | 2,037,000 | 700,000 |
| Russia | 167,000,000 | 1,800,000 | 2,000,000 |
| France | 39,000,000 | 1,385,300 | 40,000 |
| Austria-Hungary | 49,900,000 | 1,016,200 | unknown |
| United Kingdom | 46,400,000 | 702,410 | 1,386 |
| Italy | 35,000,000 | 462,400 | unknown |
| Turkey | 21,300,000 | 236,000 | 2,000,000* |
| Romania | 7,510,000 | 219,800 | 265,000–500,000 |
| Serbia | 5,000,000 | 127,500 | 600,000 |
| Bulgaria | 5,500,000 | 77,450 | 275,000 |
| India | 316,000,000 | 62,060 | negligible |
| Canada | 7,400,000 | 58,990 | negligible |
| Australia | 4,872,000 | 53,560 | negligible |
| United States | 92,000,000 | 51,822 | negligible |
*Mostly Armenians |
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