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50 Deadliest Battles in History on a Map

Can you name the 50 battles that had the most total casualties on either side in history?
Source: https://en.wikipedia.org/wiki/List_of_battles_by_casualties
Extended operations and offensives like Operation Barbarossa are considered to be made up of several battles, but are not battles themselves.
Using the high estimate, dot size indicates casualties
Click the map to zoom
Quiz by
Fianchetto
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Last updated: April 14, 2025
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First submittedJanuary 30, 2024
Times taken2,166
Average score34.0%
Rating4.71
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Year
Conflict
Casualties
Battle
1941-1944
World War II
5.5 Million
Siege of Leningrad
1942-1943
World War II
2.5 Million
Battle of Stalingrad
1258
Mongol invasions and conquests
2 Million
Siege of Baghdad
1943
World War II
2 Million
Battle of Kursk
1945
World War II
1.3 Million
Battle of Berlin
1916
World War I
1.2 Million
Battle of the Somme
1221
Mongol conquest of the Khwarazmian Empire
1.2 Million
Siege of Gurganj
1941
World War II
1 Million
Battle of Moscow
1941
World War II
998,000
Battle of Smolensk
1916
World War I
976,000
Battle of Verdun
1941
World War II
761,783
First Battle of Kyiv
1941
World War II
748,000
Battle of Bryansk
1914
World War I
700,000
Battle of Galicia
1938
Second Sino-Japanese War
700,000
Battle of Wuhan
1942
World War II
662,847
First Battle of Voronezh
1917
World War I
585,000+
Third Battle of Ypres
1914
World War I
513,000
First Battle of the Marne
1614-1615
Edo Period
500,000
Siege of Osaka
1945
World War II
500,000
Battle of Manila
1917
World War I
463,000
Second Battle of the Aisne
1941
World War II
429,886
Battle of Białystok–Minsk
1948
Chinese Civil War
425,000
Siege of Changchun
1944–1945
World War II
422,000
Siege of Budapest
87–86 BC
First Mithridatic War
400,000
Siege of Athens and Piraeus
1937
World War II
398,800
Battle of Shanghai
Year
Conflict
Casualties
Battle
1914
World War I
390,000
Battle of Łódź
1942
World War II
365,135
Battle of Lyuban
1945
World War II
345,330
Battle of Luzon
1871
Franco-Prussian War
332,142
Siege of Paris
1942
World War II
300,000
Second Battle of Kharkov
1918
World War I
288,000
Second Battle of the Marne
1917
World War I
288,000
Battle of Arras
1918
World War I
287,259
Battle of Soissons
1917
World War I
273,000
Eleventh Battle of the Isonzo
1918
World War I
263,541+
First Battle of the Aisne
1918
World War I
257,000
Third Battle of the Aisne
1914
World War I
253,000
Siege of Przemyśl
1914
World War I
251,120
Battle of Limanowa–Łapanów
1916
World War I
250,000
Battle of Asiago
1521
Spanish conquest of Aztec Empire
240,000
Siege of Tenochtitlan
1945
World War II
240,000
Battle of Okinawa
1941–1942
World War II
236,437
Second Siege of Sevastopol
1939
World War II
243,000
Battle of the Bzura
1941
World War II
223,853
Battle of Uman
1918
World War I
228,340
Battle of the Lys
1854–1855
Crimean War
218,900
First Siege of Sevastopol
1944-1945
World War II
218,900
Battle of the Bulge
1915
World War I
216,200
Second Battle of the Masurian Lakes
1914
World War I
214,480
Battle of the Vistula River
1914
World War I
210,000
First Battle of Ypres
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7 Comments
Neodymium
+3
Level 63
Jan 30, 2024
nommed
Shadywyvern
+5
Level 85
Apr 14, 2025
great quiz but off the bat I noticed a couple obvious ones missing...the Somme, Verdun, and the Marne all have at least a million which even the article says. those were just the gut ones that came to mind for me but there may be others that should probably be added
R4stel
+5
Level 42
Apr 14, 2025
Nice quiz buh have you forgot WWI ?

Verdun, Somme, Marne, Brusilov ....

Neil
+1
Level 65
Apr 14, 2025
This is too wrong to complete. Many of the older battles are entirely guesswork. Key WWI battles are missing as noted elsewhere, as are big battles on the Eastern Front in WWII - some argue the Battle of Moscow was the biggest battle of all time. Battle of the Bulge? Doesn't even approach the figures on the Eastern Front. Best delete and start again.
Fianchetto
+2
Level 79
Apr 14, 2025
Well, there's nothing I can do about the older battles being guesswork.

Western front battles had far fewer casualties than Eastern front. This quiz goes by casualties.

Alittletimmy
+1
Level 69
Apr 14, 2025
Great quiz, except your numbers for the Russo-Ukrainian War are way too large. The real numbers are likely half of that at most.
Fianchetto
+1
Level 79
Apr 14, 2025
Updated, should be fixed now.
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