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HISTORY

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War

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Battles with the Highest Total Casualties

This list features the deadliest battles in history based on the death toll.

RANK

BATTLE

DEATH TOLL

DATES

PARTIES INVOLVED

1

Siege of Leningrad

5.5 million

1941–1944

Soviet Union vs. Nazi Germany

2

Battle of Stalingrad

2.5 million

1942–1943

Soviet Union vs. Nazi Germany

3

Siege of Baghdad

2.0 million

1258

Mongol Empire vs. Abbasid Caliphate

4

Battle of Berlin

1.2 million

1945

Soviet Union vs. Nazi Germany

5

Siege of Gurganj

1.2 million

1221

Mongol Empire vs. Khwarezmian Empire

6

Battle of Kiev

761,783

1941

Soviet Union vs. Nazi Germany

7

Battle of Manila

500,000

1945

United States vs. Japan

8

Siege of Changchun

425,000

1948

Communist forces vs. Nationalist forces

9

Siege of Budapest

422,000

1944–1945

Soviet Union vs. German and Hungarian forces

10

Battle of Shanghai

400,000

1937

Nationalist China vs. Japan

11

Siege of Paris

332,142

1871

French Communards vs. French government forces

12

Battle of Okinawa

241,593

1945

United States vs. Japan

13

Siege of Tenochtitlan

240,000

1521

Spanish Conquistadors vs. Aztec Empire

14

Second Siege of Sevastopol

236,437

1941–1942

Soviet Union vs. Nazi Germany

15

First Siege of Sevastopol

230,000

1854–1855

Allied forces vs. Russian Empire


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References

World Atlas. (n.d.). The deadliest battles in human history. Available at: https://www.worldatlas.com/history/the-deadliest-battles-in-human-history.html [Accessed 1 December 2025].
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