The deadliest battle in human history killed more people in 5 months than the entire population of Germany at the time.
How to Play: Guess if the battle on the right had MORE or FEWER total casualties than the one on the left.
Name A
Name B
Top 10 Deadliest Battles in History
Battle casualties are killed + wounded + missing across all sides. Historical estimates vary; we use widely-cited mid-range figures.
| # | Name | Total Casualties | Unit |
|---|---|---|---|
| 1 | Stalingrad (WWII, 1942-43) | 2,000,000 | casualties |
| 2 | Leningrad Siege (WWII) | 1,500,000 | casualties |
| 3 | Moscow Battle (WWII, 1941) | 1,500,000 | casualties |
| 4 | Kursk (WWII, 1943) | 1,500,000 | casualties |
| 5 | Berlin (WWII, 1945) | 1,300,000 | casualties |
| 6 | Somme (WWI, 1916) | 1,200,000 | casualties |
| 7 | Belgium (WWII, 1944-45) | 800,000 | casualties |
| 8 | Verdun (WWI, 1916) | 714,000 | casualties |
| 9 | Manchurian Campaign (WWII) | 681,000 | casualties |
| 10 | Dnieper-Carpathian (WWII) | 485,000 | casualties |
Battle Casualty Categories
Stalingrad (1942-43) is the deadliest battle in history. Over 5 months, ~2 million Soviet, German, Italian, Romanian, and Hungarian soldiers were killed, wounded, or captured.
World War I battles (Verdun, Somme) compressed enormous casualties into trench warfare on small fronts. Verdun had 714,000 casualties over 10 months on a 30km front.
Modern battles tend to have fewer casualties than industrial wars due to long-range weapons, air superiority, and smaller frontline forces. Even Mosul (2016-17) at 18,000 is small compared to WWII.
Frequently Asked Questions
Deadliest battle ever?
Stalingrad at ~2 million casualties (killed + wounded + missing across all sides).
Why was WWI so deadly?
Trench warfare with industrial weapons (artillery, machine guns) created prolonged grinding battles. Both sides accumulated huge casualties.
Are these accurate?
Mid-range estimates. Historical battles have ±20% uncertainty. Soviet WWII figures are particularly debated.
Was Pearl Harbor a major battle?
By casualty count no — 3,500 killed/wounded. But geopolitically it brought the US into WWII.
Note: Battle casualties (killed + wounded + missing) per major historical references.
More Wise Games to Try