Date
|
Casualties
|
War
|
1939-1945
|
70,000,000-80,000,000
|
World War II
|
1914-1918
|
30,000,000-40,000,000
|
World War I
|
220-280
|
36,000,000
|
Three Kingdoms War
|
1850-1864
|
20,000,000-30,000,000
|
Taiping Rebellion
|
1937-1945
|
20,000,000
|
Second Sino-Japanese War
|
755-763
|
13,000,000
|
An Lushan Rebellion
|
1917-1922
|
8,000,000-11,000,000
|
Russian Civil War
|
1862-1877
|
10,000,000
|
Dungan Revolt
|
1945-1949
|
7,000,000-9,000,000
|
Chinese Civil War
|
1618-1648
|
8,000,000
|
Thirty Years' War
|
1803-1815
|
5,000,000-7,000,000
|
Napoleonic Wars
|
1998-2003
|
5,400,000
|
Second Congo War
|
1955-1975
|
5,000,000
|
Vietnam War
|
1950-1953
|
4,500,000
|
Korean War
|
1967-1970
|
3,000,000-4,000,000
|
Nigerian Civil War
|
1337-1453
|
3,000,000
|
Hundred Years' War
|
1910-1920
|
1,700,000-2,700,000
|
Mexican Revolution
|
1095-1291
|
1,000,000-2,000,000
|
Crusades
|
264-146 BC
|
1,500,000-1,900,000
|
Punic Wars
|
1861-1865
|
1,600,000
|
American Civil War
|
|