1920
1920
Mexican War 1910-1920, Mexico Civil War † ~1,000,000 – 2,500,000 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 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 Russo-Polish War 1919-1920, Poland, Belarus, Russia, Ukraine, Latvia Russia, Ukraine and Poland † 246,250 Invasion of Azerbaijan 1920, Azerbaijan Soviet Union, Azerbaijan † ~20,000-30,000 Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Franco-Syrian War 1920, Syria France, Syria † 5,000 Iraq 1920-1921, Area: Iraq UK, Iraq † 2,000
1921
1921
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 Franco-Turkish War 1919-1921, Turkey, Cyprus, Iraq France, Turkey † 40,000 Greco-Turkish War 1919-1922, Turkey Greece, Turkey † 59,125 Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Iraq 1920-1921, Area: Iraq UK, Iraq † 2,000 Free Staters vs. Irregulars 1921-1922, Ireland Ireland † 4,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000
1922
1922
Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Greco-Turkish War 1919-1922, Turkey Greece, Turkey † 59,125 Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Free Staters vs. Irregulars 1921-1922, Ireland Ireland † 4,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000
1923
1923
Armenian Massacres 1915-1923, Armenia Armenia, Ottoman Empire † 1.500,000 Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000
1924
1924
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000 Afghanistan 1924-1925, Afghanistan Civil War † 1,500 Honduras 1924, Honduras Coup d’état † 1,000
1925
1925
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000 Afghanistan 1924-1925, Afghanistan Civil War † 1,500 Druze Revolt 1925-1927, Syria, Lebanon Syria, France, Senegal, Morocco (both as French territories) † 8,000
1926
1926
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 The Rif War 1921-1926, Morocco Spain, Morocco (1924 French intervene and lose 12,000 troops † 45,000 Druze Revolt 1925-1927, Syria, Lebanon Syria, France, Senegal, Morocco (both as French territories) † 8,000 China, Northern Expedition 1926-1928, China Civil War † 10,500 Mexico 1926-1930, Mexico Cristeros vs. Government † 10,000
1927
1927
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Druze Revolt 1925-1927, Syria, Lebanon Syria, France, Senegal, Morocco (both as French territories) † 8,000 China, Northern Expedition 1926-1928, China Civil War † 10,500 Mexico 1926-1930, Mexico Cristeros vs. Government † 10,000
1928
1928
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 China, Northern Expedition 1926-1928, China Civil War † 10,500 Mexico 1926-1930, Mexico Cristeros vs. Government † 10,000 Afghanistan 1928-1929, Afghanistan Civil War † 7,500
1929
1929
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Mexico 1926-1930, Mexico Cristeros vs. Government † 10,000 Afghanistan 1928-1929, Afghanistan Civil War † 7,500 Sino-Soviet War 1929 China Soviet Union, China † 3,200 China 1929-1930 China Civil War † 75,000
1930
1930
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 Mexico 1926-1930, Mexico Cristeros vs. Government † 10,000 China 1929-1930, China Civil War † 75,000 China 1930-1935, China Communists- Civil War † 200,000
1931
1931
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 China 1930-1935, China Communists- Civil War † 200,000 Soviet Invasion of Turkestan 1931-1934, Turkestan Soviet Union, Turkestan † 20,000 Manchurian War 1931-1933, Manchuria Japan, China † 60,000
1932
1932
Sanusi Resistance 1920-1932, Libya Libya, Italy † 40,000 China 1930-1935, China Communists † 200,000 Soviet Invasion of Turkestan 1931-1934, Turkestan Soviet Union, Turkestan † 20,000 Manchurian War 1931-1933, Manchuria Japan, China † 60,000 El Salvador 1932, El Salvador Civil War †~10,000-30,000 Chaco War 1932-1935, Bolivia,Paraguay (Gran Chaco) Bolivia,Paraguay † 130,000 Brazil 1932,Brazil Civil War † 1,000
1933
1933
China 1930-1935, China Communists † 200,000 Soviet Invasion of Turkestan 1931-1934, Turkestan Soviet Union, Turkestan † 20,000 Manchurian War 1931-1933, Manchuria Japan, China † 60,000 Chaco War 1932-1935, Bolivia, Paraguay (Gran Chaco) Bolivia, Paraguay † 130,000
1934
1934
China 1930-1935, China Communists † 200,000 Soviet Invasion of Turkestan 1931-1934, Turkestan Soviet Union, Turkestan † 20,000 Chaco War 1932-1935, Bolivia, Paraguay (Gran Chaco) Bolivia, Paraguay † 130,000 Spain 1934, Spain Civil War (socialists vs. government) † 1,300 Austria- Civil Conflict Area: Austria 1934, (Christian Socialist vs. Social Democratic Party) †1,000
1935
1935
China 1930-1935, China Communists- † 200,000 Chaco War 1932-1935, Bolivia, Paraguay (Gran Chaco) Bolivia, Paraguay † 130,000 Italo-Ethiopian War 1935-1936, Ethiopia Ethiopia, Italy † 20,000
1936
1936
Italo-Ethiopian War 1935-1936, Ethiopia Ethiopia, Italy † 20,000 Spain 1936-1939, Spain Civil War - with foreign intervention (Fascists vs. Nationalists), Germany (19,000 troops fought), Italy (75,000 troops) and Portugal (12,000 troops/volunteers). Several other countries sent smaller volunteer troops † 660,000 Great Purge 1936-1939, Soviet Union, Mongolia, Poland Mongolia † ~35,000-100,000 executed Soviet Union †~724,000 (Stalin’s executions lasted until his death until 1953) Poland † ~111,000
1937
1937
Spain 1936-1939, Spain Civil War - with foreign intervention (Fascists vs. Nationalists), Germany (19,000 troops fought), Italy (75,000 troops) and Portugal (12,000 troops/volunteers) † 660,000 Great Purge 1936-1939, Soviet Union, Mongolia, Poland Mongolia † ~35,000-100,000 executed Soviet Union †~724,000 (Stalin’s executions lasted until his death until 1953) Poland † ~111,000 Sino-Japanese War 1937-1941, China Japan, China † 1,000,000
1938
1938
Spain 1936-1939, Spain Civil War - with foreign intervention (Fascists vs. Nationalists), Germany (19,000 troops fought), Italy (75,000 troops) and Portugal (12,000 troops/volunteers) † 660,000 Great Purge 1936-1939, Soviet Union, Mongolia, Poland Mongolia † ~35,000-100,000 executed Soviet Union †~724,000 (Stalin’s executions lasted until his death until 1953) Poland † ~111,000 Sino-Japanese War 1937-1941, China Japan, China † 1,000,000 Changkufeng War 1938, Russia Japan and Soviet Union † 1,700
1939
1939
Spain 1936-1939, Spain Civil War - with foreign intervention (Fascists vs. Nationalists), Germany (19,000 troops fought), Italy (75,000 troops) and Portugal (12,000 troops/volunteers) † 660,000 Great Purge 1936-1939, Soviet Union, Mongolia, Poland Mongolia † ~35,000-100,000 executed Soviet Union † ~724,000 (Stalin’s executions lasted until his death until 1953) Poland † ~111,000 Sino-Japanese War 1937-1941, China Japan, China † 1,000,000 Nomohan War 1939, Mongolia Monogolia, Soviet Union, Japan † 28,000 Russo-Finnish War (The Winter War) 1939-1940, Finland Soviet Union, Finland † 90,000 World War II 1939-1945, Europe, Asia Albania, Australia, Austria, Bahrain, Canada, Czechoslovakia, Finland, France, Germany, India, Italy, Japan, Mongolia, Nepal, New Zealand, Newfoundland, Poland, Romania, South Africa, Soviet Union, United Kingdom † ~ 50,000,000 - 78,000,000 (see 1945 for details)