Deadliest Wars in History
War↕ | Dates↕ | Parties↕ | Estimated Deaths↕ | Duration↕ | Known For↕ |
|---|---|---|---|---|---|
World War II | 1939-1945 | Allies vs Axis Powers | 70-85 million | 6 years | Deadliest conflict in history; Holocaust; atomic bombings of Hiroshima and Nagasaki |
Mongol Conquests | 1206-1368 | Mongol Empire vs various | 40-60 million | 162 years | Largest contiguous land empire; devastating sieges across Asia and Europe |
World War I | 1914-1918 | Allies vs Central Powers | 15-22 million | 4 years | Trench warfare; first use of chemical weapons and tanks |
Taiping Rebellion | 1850-1864 | Taiping Heavenly Kingdom vs Qing Dynasty | 20-30 million | 14 years | Bloodiest civil war in history; quasi-Christian theocratic movement in China |
Second Sino-Japanese War | 1937-1945 | China vs Japan | 15-22 million | 8 years | Nanjing Massacre; part of wider Pacific theater of WWII |
An Lushan Rebellion | 755-763 | An Lushan vs Tang Dynasty | 13-36 million | 8 years | Near-collapse of Tang Dynasty; massive depopulation of northern China |
Napoleonic Wars | 1803-1815 | French Empire vs European coalitions | 3.5-6.5 million | 12 years | Napoleon's conquests; Battle of Waterloo; reshaping of European borders |
Thirty Years' War | 1618-1648 | Catholic vs Protestant states | 4.5-8 million | 30 years | Devastated Central Europe; led to Peace of Westphalia and modern state system |
Chinese Civil War | 1927-1949 | Communists vs Nationalists | 8-11 million | 22 years | Mao Zedong's rise; founding of People's Republic of China |
Russian Civil War | 1917-1922 | Red Army vs White Army | 7-12 million | 5 years | Bolshevik consolidation of power; famine and disease |
Dungan Revolt | 1862-1877 | Hui Muslims vs Qing Dynasty | 8-12 million | 15 years | Ethnic and religious conflict in northwest China |
Korean War | 1950-1953 | North Korea & China vs South Korea & UN | 2.5-3.5 million | 3 years | Cold War proxy conflict; Korean Peninsula divided at 38th parallel |
Vietnam War | 1955-1975 | North Vietnam vs South Vietnam & USA | 1.3-3.4 million | 20 years | Guerrilla warfare; Agent Orange; massive anti-war movement |
Seven Years' War | 1756-1763 | Britain & Prussia vs France & Austria | 900,000-1.4 million | 7 years | First truly global conflict; reshaped colonial empires |
Iran-Iraq War | 1980-1988 | Iran vs Iraq | 500,000-1.5 million | 8 years | Trench warfare parallels to WWI; chemical weapons use |
Hundred Years' War | 1337-1453 | England vs France | 2.3-3.3 million | 116 years | Joan of Arc; longbow dominance; end of medieval warfare |
American Civil War | 1861-1865 | Union vs Confederacy | 620,000-750,000 | 4 years | Abolition of slavery; deadliest war on American soil |
Congo Wars | 1996-2003 | Multiple African nations and militias | 3-5.4 million | 7 years | Africa's 'World War'; humanitarian catastrophe in DRC |
Crusades | 1095-1291 | Christian kingdoms vs Muslim states | 1-3 million | 196 years | Religious wars for control of Holy Land; shaped Christian-Muslim relations |
Mexican Revolution | 1910-1920 | Various revolutionary factions | 1-2 million | 10 years | Pancho Villa and Zapata; land reform; modern Mexican constitution |
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