| Battle or Siege
| Conflict
| Casualties
|
| Battle of Stalingrad
| World War II
| ~1,640,000–2,000,000 killed
|
| Brusilov Offensive
| World War I
| ~1,900,000
|
| Operation Bagration
| World War II
| ~1,400,000–1,900,000
|
| Siege of Leningrad
| World War II
| ~1,500,000
|
| Battle of Kursk
| World War II
| 1,000,000+
|
| Battle of Verdun
| World War I
| 1,000,000+ killed
|
| Battle of the Somme
| World War I
| ~1,000,000+
|
| Battle of Moscow
| World War II
| 900,000+
|
| Battle of Normandy
| World War II
| 425,000
|
| Battle of Salsu
| Goguryeo-Sui War
| ~300,000+
|
| Battle of Red Cliffs
| Three Kingdoms
| ~300,000+
|
| Battle of Gallipoli
| World War I
| 115,000 killed
|
| Battle of the Sit River
| Mongol invasion of Rus
| ~270,000+
|
| Battle of Plataea
| Greco-Persian Wars
| 260,000 killed
|
| Warsaw Uprising
| World War II
| 250,000+ killed
|
| Battle of Berlin
| World War II
| 230,000+ killed
|
| Siege of Tenochtitlan
| Spanish Conquest of Mexico
| 220,000+ killed
|
| Battle of Shanghai
| Second Sino-Japanese War
| 200,000+ killed
|
| Battle of Alesia
| Gallic Wars
| 150,000–200,000 killed
|
| Battle of Passchendaele
| World War I
| 225,000 killed
|
| Battle of Baghdad (1258)
| Mongol invasions
| 140,000–1,000,000 killed (incl. massacre of civilians)
|
| Battle of Vercellae
| Cimbrian War
| 140,000 killed
|
| Bombing of Dresden
| World War II
| 110,000–135,000 killed
|
| Battle of Okinawa
| World War II
| 125,000 killed
|
| Operation Mars
| World War II
| 120,000–270,000 est. killed
|
| Battle of Kōan
| Mongol invasions of Japan
| 120,000 killed
|
| Battle of Manila
| World War II
| 120,000 killed
|
| Battle of Arausio
| Cimbrian War
| 115,000 killed
|
| First Battle of the Marne
| World War I
| 100,000 killed
|
| Siege of Smyrna
| May 15, 1919 to September 9, 1922
| 100,000 killed
|
| Battle of Cambrai
| World War I
| 100,000 killed
|
| Third battle of Panipat
| War between the Maratha and Afghans forces
| 100,000 killed
|
| Third Battle of Nanking
| Taiping Rebellion
| 100,000 killed
|
| Battle of Aquae Sextiae
| Cimbrian War
| 91,000 killed
|
| Battle of Leipzig
| Napoleonic Wars
| 90,000 killed
|
| Fall of Constantinople
| Turkish Invasion of Constantinople in 1453
| 90,000 killed
|
| Battle of Borodino
| Napoleonic Wars
| 80,000–120,000 killed
|
| Battle of Beresteczko
| Cossacks uprising against Polish Commonwealth
| 80,000 killed
|
| Battle of Guandu
| Three Kingdoms
| ~80,000+
|
| Battle of Chosin Reservoir
| Korean War
| 75,000 killed
|
| Siege of Sevastopol
| Crimean War
| 70,000 killed
|
| Battle of Cannae
| Second Punic War
| 67,000–70,000+ killed
|
| Siege of Jerusalem (70)
| First Jewish-Roman War
| 60,000–1,100,000 (mass civilian casualties)
|
| Battle of Heunghwajin
| Third Goryeo-Khitan War
| 60,000–70,000+ killed
|
| Second Siege of Jinju
| Imjin War
| 60,000+ killed
|
| Meuse-Argonne Offensive
| World War I
| 54,000 killed
|
| Battle of Gaugamela
| Wars of Alexander the Great
| 53,000 killed
|
| Second Siege of Saragossa
| Peninsular War
| 50,000+ killed
|
| Battle of Las Navas de Tolosa
| Reconquista
| 50,000+ killed
|
| Third Battle of Kharkov
| World War II
| 50,000 killed
|
| Battle of "The Saw"
| Mercenary War
| 45,000+ killed
|
| Battle of Kosovo Polje
| Turkish invasion on Balkans (1389)
| ~50,000 killed
|
| Battle of Legnica
| Mongol invasions in Poland
| 40,000+ killed
|
| Siege of Jerusalem
| First Crusade
| 40,000+ killed
|
| Battle of Sekigahara
| Japanese Battle during the Sengoku period
| 40,000+ killed
|
| Battle of Telamon
| Roman-Gaulish Wars
| 40,000+ killed
|
| Battle of Berezina
| Napoleonic Wars
| 40,000 killed
|
| Battle of Ebro
| Spanish Civil War
| 36,000 killed
|
| Battle of Mukden
| Russo-Japanese War
| 36,000 killed
|
| Battle of Guadalcanal
| World War II
| 35,000 killed
|
| Battle of Königgrätz
| Austro-Prussian War
| 30,000–35,000 killed
|
| Second Battle of El Alamein
| World War II
| 35,000 killed
|
| Battle of Hattin
| Crusades
| 30,000+ killed
|
| Battle of Iwo Jima
| World War II
| 27,000 killed
|
| Battle of the Bulge
| World War II
| 26,000 killed
|
| Battle of Thermopylae
| Persian Wars
| 20,000–40,000+ killed
|
| Battle of Towton
| Wars of the Roses
| 20,000–30,000 killed
|
| Battle of Teutoburg Forest
| Germanic Wars
| 20,000–25,000+ killed
|
| Battle of Zama
| Second Punic War
| 21,500 killed
|
| Battle of the Bosnian Highlands
| Croatian-Bulgarian War of 927
| 20,000+ killed
|
| Battle of Carrhae
| Roman-Persian Wars
| 20,000+ killed
|
| Battle of Inchon
| Korean War
| 15,000 killed
|
| Siege of La Rochelle
| French Wars of Religion
| 20,000+ killed
|
| Battle of Lake Trasimene
| Second Punic War
| 16,500 killed
|
| Battle of the Hydaspes River
| Wars of Alexander the Great
| 16,000 killed
|
| Battle of Narva
| Great Northern War
| 15,000 killed
|
| Battle of Grunwald or Battle of Tannenberg
| Polish-Lithuanian-Teutonic War
| 10,000–15,000 killed
|
| Battle of Dien Bien Phu
| First Indochina War
| 10,000–15,000 killed
|
| Battle of Vukovar
| Croatian War of Independence
| 10,000–15,000 killed
|
| Siege of Sarajevo
| Bosnian War
| 12,000 killed
|
