10 Bloodiest Battles of World War I e
| Battle | Total Casualties |
| 1. Hundred Day Offensive | 1,855,369 |
| 2. Spring Offensive | 1,539,715 |
| 3. Battle of the Somme | 1,219,201 |
| 4. Battle of Verdun | 976,000 |
| 5. Battle of Passchendaele | 848,614 |
| 6. Serbian Campaign | 633,500 |
| 7. First Battle of Marnes | 483,000 |
| 8. Battle of Gallipoli | 473,000 |
| 9. Battle of Arras | 278,000 |
| 10. Battle of Tannenberg | 182,000 |
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