| Belgium | 38,000 |
| British Empire | 921,000 |
| France | 1,398,000 |
| Greece | 26,000 |
| Italy | 578,000 |
| Portugal | 7,000 |
| Romania | 250,000 |
| Russia | 1,811,000 |
| Serbia | 278,000 |
| United States | 114,000 |
| Austria-Hungary | 1,100,000 |
| Bulgaria | 88,000 |
| Germany | 2,037,000 |
| Ottoman Empire | 804,000 |
Ferguson, L. (1998) The Pity of War. Penguin Books, London.