1900
The War of a Thousand Days 1899-1903, Columbia, Panama (then a province) Civil War † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000 Boxer Rebellion 1899-1901 China China, Japan, UK, Russia † 22,500, † Civilian 18,952 Russo-Manchurian War 1900, Manchuria Russia, Japan † 4,000
The War of a Thousand Days 1899-1903, Columbia, Panama (then a province) Civil War † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000 Boxer Rebellion 1899-1901 China China, Japan, UK, Russia † 22,500, † Civilian 18,952 Russo-Manchurian War 1900, Manchuria Russia, Japan † 4,000
1901
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000 Boxer Rebellion 1899-1901, China China, Japan, UK, Russia † 22,500, † Civilian 18,952
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000 Boxer Rebellion 1899-1901, China China, Japan, UK, Russia † 22,500, † Civilian 18,952
1902
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Second Boer War 1899-1902, Transvaal, Orange Free State, Cape Colony (South Africa) British Empire (British India & Australia), Transvaal (South African Republic) and the Orange Free State † 30,237, † Civilian 27,927 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Philippine Insurrection 1899-1902, Philippines Philippines and US † 26,196, † Civilian ~34,000-1,000,000
1903
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Ilinden Uprising 1903, Macedonia, Thrace Ottoman Empire, Macedonia, Bulgaria †4,000
The War of a Thousand Days 1899-1903, Civil War Columbia, Panama † 100,000 Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Ilinden Uprising 1903, Macedonia, Thrace Ottoman Empire, Macedonia, Bulgaria †4,000
1904
Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Russo-Japanese War 1904-1905 Manchuria, Korea (through Korea)-Naval Battles Japan and Russia † 130,000 South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Uruguay 1904 Uruguay Civil War(Blancos vs. Colorados) † 1,000
Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Russo-Japanese War 1904-1905 Manchuria, Korea (through Korea)-Naval Battles Japan and Russia † 130,000 South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Uruguay 1904 Uruguay Civil War(Blancos vs. Colorados) † 1,000
1905
Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Russo-Japanese War 1904-1905 Manchuria, Korea (through Korea)-Naval Battles Japan and Russia † 130,000 South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Russian Revolt of 1905 1905- 1906, Russia Civil War † 1,000
Somali Rebellion 1899-1905, Somalia Somalia, British Empire, Italy, Ethiopia † 6,000 Russo-Japanese War 1904-1905 Manchuria, Korea (through Korea)-Naval Battles Japan and Russia † 130,000 South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Russian Revolt of 1905 1905- 1906, Russia Civil War † 1,000
1906
South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Russian Revolt of 1905 1905- 1906, Russia Civil War † 1,000 Second Zulu War 1906, Natal province of British South Africa Zulu tribe and British forces † 5,000 Third Central American War 1906, Guatemala, Honduras, El Salvador Guatemala, Honduras, El Salvador † 1,000
South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Russian Revolt of 1905 1905- 1906, Russia Civil War † 1,000 Second Zulu War 1906, Natal province of British South Africa Zulu tribe and British forces † 5,000 Third Central American War 1906, Guatemala, Honduras, El Salvador Guatemala, Honduras, El Salvador † 1,000
1907
South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Romania 1907, Romania Civil War † 2,000 Morocco 1907- 1908 Morocco (against foreign workers in Casablanca) † 1,200 Fourth Central American War 1907 Honduras Honduras, Nicaragua, El Salvador † 1,000
South West African Revolt 1904-1907, Modern day Namibia Herero and Nama tribes vs. German settlers (First genocide of 20th c.) † 80,000 Maji-Maji Revolt 1905-1907, modern day Tanzania, Rwanda, Burundi Germany and German East Africa † 150,000 Romania 1907, Romania Civil War † 2,000 Morocco 1907- 1908 Morocco (against foreign workers in Casablanca) † 1,200 Fourth Central American War 1907 Honduras Honduras, Nicaragua, El Salvador † 1,000
1908
Morocco 1907- 1908 Morocco (against foreign workers in Casablanca) † 1,200 Iran 1908-1909, Iran Civil War † 1,100
Morocco 1907- 1908 Morocco (against foreign workers in Casablanca) † 1,200 Iran 1908-1909, Iran Civil War † 1,100
1909Iran 1908–1909, Iran Civil War † 1,100 Spanish–Moroccan War 1909–1910, Morocco Spain, Morocco † 2,517
1910
Spanish-Moroccan War 1909-1910, Morocco Spain, Morocco † 2,517 Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000
Spanish-Moroccan War 1909-1910, Morocco Spain, Morocco † 2,517 Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000
1911
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 Paraguay 1911-1912, Paraguay Civil War † 2,000 Morocco 1911 Morocco l Civil War † 1,000 Morocco 1911-1912, Morocco France, Spain, Morocco (Colonial) † 1,000 Italo-Turkish War 1911-19212, Libya, Dodecanese Islands Italy, Ottoman Empire † 20,000 Tibetan War of Independence 1911-1912, Tibet Civil War † 2,000 Chinese Revolution 1911, China Civil War (Emperor’s army vs. army rebels) † 1,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 Paraguay 1911-1912, Paraguay Civil War † 2,000 Morocco 1911 Morocco l Civil War † 1,000 Morocco 1911-1912, Morocco France, Spain, Morocco (Colonial) † 1,000 Italo-Turkish War 1911-19212, Libya, Dodecanese Islands Italy, Ottoman Empire † 20,000 Tibetan War of Independence 1911-1912, Tibet Civil War † 2,000 Chinese Revolution 1911, China Civil War (Emperor’s army vs. army rebels) † 1,000
1912
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 Paraguay 1911-1912, Paraguay Civil War † 2,000 Morocco 1911-1912, Morocco France, Spain, Morocco (Colonial) † 1,000 Italo-Turkish War 1911-19212, Libya, Dodecanese Islands Italy, Ottoman Empire † 20,000 Tibetan War of Independence 1911-1912, Tibet Civil War † 2,000 First Balkan War 1912-1913, Balkan Peninsula (Macedonia, Greece, Albania, Serbia, Turkey, Bulgaria, Montenegro) Serbia, Greece, Bulgaria, Montenegro vs. Ottoman Empire † 82,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 Paraguay 1911-1912, Paraguay Civil War † 2,000 Morocco 1911-1912, Morocco France, Spain, Morocco (Colonial) † 1,000 Italo-Turkish War 1911-19212, Libya, Dodecanese Islands Italy, Ottoman Empire † 20,000 Tibetan War of Independence 1911-1912, Tibet Civil War † 2,000 First Balkan War 1912-1913, Balkan Peninsula (Macedonia, Greece, Albania, Serbia, Turkey, Bulgaria, Montenegro) Serbia, Greece, Bulgaria, Montenegro vs. Ottoman Empire † 82,000
1913
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 First Balkan War 1912-1913, Balkan Peninsula (Macedonia, Greece, Albania, Serbia, Turkey, Bulgaria, Montenegro) Serbia, Greece, Bulgaria, Montenegro vs. Ottoman Empire † 82,000 Second Balkan War 1913, Bulgaria, Serbia, Greece, Ottoman Empire, Romania Serbia, Greece, Romania vs. Bulgaria over Macedonian territory † 184,000 China 1913-1914, China Civil War † 5,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 First Balkan War 1912-1913, Balkan Peninsula (Macedonia, Greece, Albania, Serbia, Turkey, Bulgaria, Montenegro) Serbia, Greece, Bulgaria, Montenegro vs. Ottoman Empire † 82,000 Second Balkan War 1913, Bulgaria, Serbia, Greece, Ottoman Empire, Romania Serbia, Greece, Romania vs. Bulgaria over Macedonian territory † 184,000 China 1913-1914, China Civil War † 5,000
1914
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 China 1913-1914, China Civil War † 5,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Kenya, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Ottoman Empire, Republic of the Congo, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia † a range between 15,000,000 and 65,000,000 (High esitmate includes SpanishFlu) see 1919 for details
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 China 1913-1914, China Civil War † 5,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Kenya, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Ottoman Empire, Republic of the Congo, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia † a range between 15,000,000 and 65,000,000 (High esitmate includes SpanishFlu) see 1919 for details
1915
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Republic of the Congo, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Republic of the Congo, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000
1916
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown Morocco 1916- 1917, Morocco Spain, France, Morocco † 2,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, France, Germany, Ghana, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Russian Empire, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown Morocco 1916- 1917, Morocco Spain, France, Morocco † 2,000
1917
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, Egypt, France, Germany, Ghana, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown Morocco 1916- 1917, Morocco Spain, France, Morocco † 2,000 China 1917-1918, China Civil War † 1,000 Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgian Congo, Belgium, Benin, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Chad, Côte d'Ivoire, Egypt, France, Germany, Ghana, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Malawi, Mali, Montenegro, Morocco, Namibia, Dominion of Newfoundland, New Zealand, Nigeria, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Senegal, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown Morocco 1916- 1917, Morocco Spain, France, Morocco † 2,000 China 1917-1918, China Civil War † 1,000 Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000
1918
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgium, Bulgaria, Burundi, Canada, France, Germany, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Montenegro, Dominion of Newfoundland, New Zealand, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Tanzania, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown China 1917-1918, China Civil War † 1,000 Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000 Finland 1918, Finland Civil War † 20,000 First Sino-Tibetan War 1918, Tibet Tibet, China † 1,000
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgium, Bulgaria, Burundi, Canada, France, Germany, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Montenegro, Dominion of Newfoundland, New Zealand, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Tanzania, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. † ~15,000,000 and 65,000,000 (see 1919 for details) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921 Ireland IRA vs. UK † unknown China 1917-1918, China Civil War † 1,000 Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000 Finland 1918, Finland Civil War † 20,000 First Sino-Tibetan War 1918, Tibet Tibet, China † 1,000
1919
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgium, Bulgaria, Burundi, Canada, France, Germany, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Montenegro, Dominion of Newfoundland, New Zealand, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Tanzania, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. Total deaths from World War 1: Algeria † 26,000 Australia † 61,928 Austria-Hungary † 1,567,000 Belgian Congo (Democratic Republic of the Congo):† 5,000 Belgium † 120,637 Benin (French West Africa) † 2,000 Bulgaria † 100,000 Burkina Faso (French West Africa) † 2,000 Cameroon (Kamerun) † 5,000 Canada † 66,944 Central African Republic (Ubangi-Shari) † 1,000 Chad (French Equatorial Africa) † 1,500 Côte d'Ivoire (1914 part of French West Africa) † 2,000 France † 1,697,800 German Empire † 2,476,897 Ghana (Gold Coast) † 1,200 Greece † 176,000 Guinea (French West Africa) † 2,500 Indian Empire † 74,187 Italy † 1,240,000 Kenya (British East Africa) † 2,000 Luxembourg (under German control but served both sides) † 2,500 Madagascar † 2,500 Malawi (Nyasaland) † 3,000 Mali (French West Africa) † 10,000 Montenegro † 3,000 Morocco (French protectorate of Morocco) † 8,000 Namibia (German South-West Africa) † 10,000 Dominion of Newfoundland † 1,204 New Zealand † 18,050 Niger (French West Africa) † 1,000 Nigeria (British West Africa) † 5,000 Norway † 1,892 Ottoman Empire † 2,921,844 Portugal † 89,222 Republic of the Congo (French Equatorial Africa) † 2,000 Romania † 680,000 Russian Empire † 3,311,000 Kingdom of Serbia † 725,000 Senegal (French West Africa) † 6,000 Sierra Leone (British West Africa) † 1,000 South Africa † 9,463 Tanzania (German East Africa) † 20,000 Togo (German Togoland) † 2,000 Tunisia (French Tunisia) † 2,000 Uganda (Uganda Protectorate) † 1,500 United Kingdom of Great Britain and Ireland † 1,225,914 United States † 117,465 Vietnam (French Indochina) † 12,000 Zambia (Northern Rhodesia) † 3,000 Total † 21,228,813 † ~15,000,000 and 65,000,000 (High estimate includes Spanish Flu) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921, Ireland IRA vs. UK † unknown Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000 Third Afghan War 1919, Afghanistan UK, Afghanistan † 2,200 Franco-Turkish War 1919-1921, Turkey, Cyprus, Iraq France, Turkey † 40,000 Greco-Turkish War 1919-1922, Turkey Greece, Turkey † 59,125 Lithuania vs. Poland 1919-1920, Lithuania Lithuania, Poland † 1,000 Hungary 1919-1920, Hungary Civil War † 4,000 Hungary 1919, Hungary Czechoslovakia, Hungary, Romania † 11,000 Russo-Polish War 1919-1920, Poland, Belarus, Russia, Ukraine, Latvia Russia, Ukraine and Poland † 246,250
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 World War I 1914-1919, Europe, Africa, the Middle East, and the Pacific Islands Australia, Austria-Hungary, Belgium, Bulgaria, Burundi, Canada, France, Germany, Greece, Guinea, Indian Empire, Italy, Kenya, Macedonia, Montenegro, Dominion of Newfoundland, New Zealand, Norway, Ottoman Empire, Portugal, Republic of the Congo, Romania, Rwanda, Kingdom of Serbia, Tanzania, Turkey, Uganda, United Kingdom of Great Britain and Ireland, United States of America, Vietnam, Zambia. Total deaths from World War 1: Algeria † 26,000 Australia † 61,928 Austria-Hungary † 1,567,000 Belgian Congo (Democratic Republic of the Congo):† 5,000 Belgium † 120,637 Benin (French West Africa) † 2,000 Bulgaria † 100,000 Burkina Faso (French West Africa) † 2,000 Cameroon (Kamerun) † 5,000 Canada † 66,944 Central African Republic (Ubangi-Shari) † 1,000 Chad (French Equatorial Africa) † 1,500 Côte d'Ivoire (1914 part of French West Africa) † 2,000 France † 1,697,800 German Empire † 2,476,897 Ghana (Gold Coast) † 1,200 Greece † 176,000 Guinea (French West Africa) † 2,500 Indian Empire † 74,187 Italy † 1,240,000 Kenya (British East Africa) † 2,000 Luxembourg (under German control but served both sides) † 2,500 Madagascar † 2,500 Malawi (Nyasaland) † 3,000 Mali (French West Africa) † 10,000 Montenegro † 3,000 Morocco (French protectorate of Morocco) † 8,000 Namibia (German South-West Africa) † 10,000 Dominion of Newfoundland † 1,204 New Zealand † 18,050 Niger (French West Africa) † 1,000 Nigeria (British West Africa) † 5,000 Norway † 1,892 Ottoman Empire † 2,921,844 Portugal † 89,222 Republic of the Congo (French Equatorial Africa) † 2,000 Romania † 680,000 Russian Empire † 3,311,000 Kingdom of Serbia † 725,000 Senegal (French West Africa) † 6,000 Sierra Leone (British West Africa) † 1,000 South Africa † 9,463 Tanzania (German East Africa) † 20,000 Togo (German Togoland) † 2,000 Tunisia (French Tunisia) † 2,000 Uganda (Uganda Protectorate) † 1,500 United Kingdom of Great Britain and Ireland † 1,225,914 United States † 117,465 Vietnam (French Indochina) † 12,000 Zambia (Northern Rhodesia) † 3,000 Total † 21,228,813 † ~15,000,000 and 65,000,000 (High estimate includes Spanish Flu) Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Ireland 1916-1921, Ireland IRA vs. UK † unknown Russian Revolutions 1917-1921, Russia Colonial- tied in with Russian Civil War † 300,000 Russian Civil War 1917-1921, Russia Civil War † 500,000 Third Afghan War 1919, Afghanistan UK, Afghanistan † 2,200 Franco-Turkish War 1919-1921, Turkey, Cyprus, Iraq France, Turkey † 40,000 Greco-Turkish War 1919-1922, Turkey Greece, Turkey † 59,125 Lithuania vs. Poland 1919-1920, Lithuania Lithuania, Poland † 1,000 Hungary 1919-1920, Hungary Civil War † 4,000 Hungary 1919, Hungary Czechoslovakia, Hungary, Romania † 11,000 Russo-Polish War 1919-1920, Poland, Belarus, Russia, Ukraine, Latvia Russia, Ukraine and Poland † 246,250