a memorial for all wars: the Polynational War Memorial
 

LIST OF WARS

Wars since 1900

A list of all wars in the 20th and 21st centuries, based on data by COW, Prio and UCDP. See the source page or the FAQ for more information. How many died because of warfare in the 20th and 21st century? See the new stats page for the answer.

NEW! Preview of an experimental version of a timeline of all wars since 1900.

This section is being updated! Check the update log (June 2017)

Name of War   Years   Fatalities Type Mem. Note
Philippine insurrection 1899 - 1902 20,500 1
Second Boer war 1899 - 1902 30,800 1
The War of a Thousand Days 1899 - 1903 100,000 1
The Dervish State vs Ethiopia, Britain and Italy 1899 - 1920 6,000 1
Sino-Russian War 1900 - 1900 4,000 1
The Boxer Rebellion 1900 - 1900 3,003 1
Uprisings in Colonial Angola 1902 - 1904 2,000 1
Ilinden Uprising 1903 - 1903 6,330 1
Second Yemen Rebellion 1904 - 1904 30,000 1
Uruguay Civil War 1904 - 1904 1,000 1
Southwest African Revolt 1904 - 1905 12,800 1 [1]
Russo-Japanese war 1904 - 1905 151,831 1 [1]
Dutch-Achinese War 1904 - 1907 24,200 1
Maji Maji revolt 1905 - 1906 8,840 1
Russian Revolution 1905 1905 - 1906 1,500 1
Zulu Rebellion 1906 - 1906 2,356 1
Sokoto and UK vs Mahdist Revolt 1906 - 1906 2,080 1
Third Central American war 1906 - 1906 1,000 1
4th Central American war 1907 - 1907 1,000 1
Romanian Peasant Revolt 1907 - 1907 2,000 1
Morocco unrest 1907 - 1908 1,400 1
Portugese war against Dembos 1907 - 1910 5,100 1
Ma al-’Aynayn’s Anti-Colonial Insurgency 1907 - 1910 3,150 1
Korean guerilla war against Japanese occupation 1907 - 1910 17,736 1
Iranian Constitution War 1908 - 1909 1,100 1
The second Rif War 1909 - 1910 10,000 1
French Conquest of Wadai Sultanate 1909 - 1911 12,000 1
Asir-Yemen Revolt 1910 - 1911 9,000 1
Mexican Revolution 1910 - 1920 125,000 1 [1]
Chinese Revolution 1911 - 1911 1,000 1 [2]
Cuba vs Partido Independiente de Color 1911 - 1911 1,050 1
First Sino-Tibetan War 1911 - 1912 2,000 1
Paraguay Coups 1911 - 1912 5,000 1
Italo-Turkish War 1911 - 1912 20,000 1
1st Balkan War 1912 - 1913 82,000 1 [1]
2nd Balkan War 1913 - 1913 60,500 1
Kuomintang vs Chinese Army 1913 - 1913 5,000 1
Moro Rebellion 1913 - 1913 15,050 1
Chinese Govt vs Bai Lang (White Wolf) Rebels 1914 - 1914 5,000 1
World War I 1914 - 1918 10,670,868 1 [12]
Southern China Revolt 1915 - 1918 1,000 1
Russia-Turkestan 1916 - 1917 1,350 1
Russian Revolution and Civil War 1917 - 1922 802,225 1 [1]
Finnish Civil War 1918 - 1918 15,150 1 [1]
Second Sino-Tibetan 1918 - 1918 1,500 1
Estonian Liberation War 1918 - 1920 11,750 1 [2]
Latvian Liberation 1918 - 1920 13,246 1
Caco Revolt 1918 - 1920 2,102 1
Sparticist Rising 1919 - 1919 2,170 1
Hungarian–Romanian War of 1919 1919 - 1919 11,000 1
Third Anglo-Afghan War 1919 - 1919 2,136 1
Polish-Soviet War 1919 - 1920 100,000 1
First British-Waziristan War 1919 - 1920 2,000 1
Hungary Civil War 1919 - 1920 1,500 1
Turkish War of Independence 1919 - 1921 40,000 1
Second Greco Turkish War 1919 - 1922 50,000 1
Nejd-Hejaz Wars 1919 - 1925 4,000 1
First Chinese Warlord War 1920 - 1920 35,000 1
Lithuanian-Polish War 1920 - 1920 1,000 1
Franco-Syrian war 1920 - 1920 3,500 1 [1]
Green Rebellion 1920 - 1921 6,700 1
Iraq vs UK 1920 - 1921 9,540 1
Conquest of Mongolia 1920 - 1921 4,000 1
Blackshirts vs Leftists 1920 - 1922 3,300 1
Third Rif War 1920 - 1926 70,000 1
Senussi Orden vs Italy 1920 - 1932 40,000 1
Kronstadt Rebellion 1921 - 1921 2,600 1
Ireland freestaters vs Irregulars 1921 - 1922 4,000 1
Moplah Riots in Kerala 1921 - 1922 2,450 1
Soviet-Turkestan War 1921 - 1923 3,500 1
Second Chinese Warlord War 1922 - 1922 20,000 1
Honduras Coup 1924 - 1924 1,000 1
Afghan rebels vs govt 1924 - 1925 2,000 1
Third Chinese Warlord War 1925 - 1926 1,000 1
Druze revolt 1925 - 1927 6,000 1
Northern Expedition 1926 - 1928 126,500 1
The Cristero War 1926 - 1929 10,000 1
Kuomintang vs Gansu Rebels 1928 - 1928 200,000 1
Second Afghan Anti-Reform War 1928 - 1929 15,000 1
Escobar Rebellion 1929 - 1929 2,000 1
Sino-Soviet war 1929 - 1929 3,200 1
Ikhwan Revolt 1929 - 1930 5,500 1
Kuomintang vs warlords 1929 - 1930 75,000 1
The Yên Bái Uprising 1930 - 1931 1,000 1
Saya San Rebellion 1930 - 1932 1,140 1
Communists vs Koumintang 1930 - 1935 500,000 1
Manchurian War 1931 - 1933 60,000 1 [2]
Xinjiang Muslim Revolt 1931 - 1934 21,000 1
Aprista Revolt in Peru 1932 - 1932 1,100 1
El Salvador, La Matanza 1932 - 1932 2,600 1
Brazilian Revolt 1932 - 1932 1,000 1
Chaco War 1932 - 1935 92,661 1
Spanish Socialists vs Govt 1934 - 1934 1,335 1
Saudi-Yemeni War 1934 - 1934 2,100 1
Italo-Ethiopian War 1935 - 1936 20,000 1
Spanish Civil War 1936 - 1939 466,300 1 [1]
Arab revolt in Mandatory Palestine 1936 - 1939 2,576 1
Second British-Waziristan 1936 - 1939 10,200 1
Third Sino-Japanese War 1937 - 1941 1,000,000 1 [6]
Changkufeng Incident 1938 - 1938 1,726 1
The battle of Khalkhin Gol 1939 - 1939 28,000 1
The Winter War in Finland 1939 - 1940 151,798 1 [1]
World War II 1939 - 1945 50,000,000 1 [36]
Franco-Thai War 1940 - 1941 1,400 1 [1]
Indonesian Independence 1945 - 1946 5,400 1
Poland and Soviet Union vs Ukrainian Partisans 1945 - 1947 59,700 1
Soviet Union vs Baltic Partisans (’’Forest Brethren’’) 1945 - 1951 32,400 1
Greece Civil War 1946 - 1949 154,000 1
Chinese Civil War 1946 - 1949 1,200,000 1 [1]
First Indochina War Comm. vs France 1946 - 1954 377,523 1 [2]
Philippines, Huk rebels vs Govt 1946 - 1954 9,695 1
Madagascar Rebellion 1947 - 1947 6,952 1 [1]
Taiwanese revolt 1947 - 1947 1,000 1 [1]
Paraguayan Gvt vs Rebels 1947 - 1947 4,000 1
Telangana Rebellion and Indo-Hyderabad War 1947 - 1948 4,360 1
Civil War in Mandatory Palestine 1947 - 1948 4,009 1 [2]
Indian Partition Communal Violence 1947 - 1948 200,000 1
Costa Rican Civil War 1948 - 1948 2,000 1
First Kashmir War 1948 - 1948 7,500 1
Yemeni Imamate War 1948 - 1948 4,000 1
Arab-Israeli War 1948 - 1949 21,111 1 [1]
Cheju Rebellion in South Korea 1948 - 1949 17,000 1 [1]
Indian Govt vs Communist Rebels CPI 1948 - 1951 4,000 1
Malayan Civil War 1948 - 1957 10,845 1 [2]
La Violencia 1948 - 1958 29,800 1
Burmese Govt vs Communist Guerillas 1948 - 1994 17,700 1
Korean War 1949 - 1953 995,025 1 [11]
Taiwan Strait Crisis 1949 - 1954 10,025 1
Israel vs Palestine 1949 - 2014 17,123 1 [6]
Burmese Government vs Separatist Guerillas 1949 - 2015 54,487 1
Indonesian Govt vs Republic of South Moluccas 1950 - 1950 1,000 1
Third Sino-Tibetan War 1950 - 1950 4,000 1
Bolivian Revolution 1952 - 1952 1,000 1
Tunisian war of Independence 1953 - 1956 2,000 1
Moroccan War of Independence 1953 - 1956 1,000 1
Indonesia vs PRRI, Permesta and Darul Islam 1953 - 1961 33,965 1
Cuban Revolution 1953 - 1961 1,205 1
Kenya, Mau-Mau vs UK 1954 - 1956 12,955 1 [3]
Algerian War of Independece 1954 - 1962 184,886 1 [2]
Vietnam Civil War 1955 - 1964 164,923 1
Soviet Invasion of Hungary 1956 - 1956 3,171 1 [2]
Sinai War 1956 - 1956 2,142 1 [2]
Tibetan Uprising 1956 - 1959 16,000 1
Cameroon War of Independence 1957 - 1959 11,700 1
First Lebanese War 1958 - 1958 1,400 1 [1]
1959 Mosul uprising in Iraq 1959 - 1959 2,000 1 [1]
Laos Civil War 1959 - 1973 21,500 1
Cameroonian Govt vs UPC 1960 - 1961 60,000 1
Congo Crisis 1960 - 1965 7,175 1 [2]
Bizerte Crisis 1961 - 1961 1,394 1
First Kurdish–Iraqi War 1961 - 1970 6,600 1
Angolan War of Independence 1961 - 1975 79,000 1 [1]
Sino-Indian War 1962 - 1962 2,105 1 [2]
North Yemen Civil War 1962 - 1970 10,000 1
Indonesian annexation of West Papua 1962 - 1978 8,700 1
First Rwanda Civil War 1963 - 1964 1,000 1
Sudan Government vs Insurgents 1963 - 1972 10,000 1
Guinea Bissau War of Independence 1963 - 1973 15,000 1 [1]
Second Kashmir War 1964 - 1971 16,327 1 [2]
Mozambique War of Independence 1964 - 1974 13,500 1 [2]
Ethiopia vs Eritrean Separatists ELF/EPLF 1964 - 1991 168,510 1
Colombia Govt vs Guerillas Farc and ELN 1964 - 2015 27,011 1 [3]
Dominican Republic Coup 1965 - 1965 4,027 1
Vietnam War 1965 - 1975 2,048,050 1 [7]
Guatemalan Civil War 1965 - 1995 45,418 1 [2]
Peruvian Gvt vs Sendero Luminoso and MRTA 1965 - 2010 17,234 1 [1]
Namibia vs South Africa 1966 - 1988 10,000 1 [5]
Iranian Govt vs KDPI 1966 - 1996 2,618 1 [1]
Chad Civil War 1966 - 2010 36,078 1
The Six Day War 1967 - 1967 5,413 1 [1]
Nigerian Civil War 1967 - 1970 75,000 1 [2]
Cambodian Civil War 1967 - 1975 250,000 1
Chinese Cultural Revolution 1967 - 1976 2,050,000 1 [1]
Rhodesian Government vs ZANU,ZAPU,PF 1967 - 1979 27,080 1 [3]
Football War Honduras vs El Salvador 1969 - 1969 2,107 1
Israel vs Egypt 1969 - 1970 5,520 1
Philippine Government vs CPP Guerrilla 1969 - 2015 24,972 1
Philippines Govt vs Mindanao Guerillas 1970 - 2015 18,096 1
Bangladesh War 1971 - 1971 50,000 1 [4]
Sri Lanka Govt vs JVP 1971 - 1990 2,018 1 [1]
Northern Ireland, The Troubles 1971 - 1998 3,010 1 [4]
Hutu Rebellion 1972 - 1972 153,000 1
Chilean MIlitary Coup 1973 - 1973 2,095 1 [2]
Yom Kippur War 1973 - 1973 6,450 1 [1]
Turko Cypriot War 1974 - 1974 5,000 1
Argentina: Civil War and Dirty War 1974 - 1977 4,677 1 [2]
Balochistan Insurgency 1974 - 1977 8,600 1
Thai Govt vs CPT 1974 - 1982 3,425 1
Western Sahara War 1975 - 1989 12,687 1 [1]
Lebanese Civil War 1975 - 1990 131,104 1 [8]
Indonesian Govt vs Fretilin - East Timor 1975 - 1999 76,623 1 [1]
Angolan Gvt vs UNITA Guerilla 1975 - 2002 114,898 1 [1]
Ethiopian Government vs EPRDF 1976 - 1991 56,003 1
Ethiopian Govt vs Ogadeni Rebels - WSLF/ONLF/AIAI 1976 - 2015 23,407 1 [1]
Ethiopia vs Oromia rebels (OLF) 1977 - 2013 2,651 1 [1]
Mozambique Govt vs RENAMO and FRELIMO 1977 - 2013 115,888 1
Vietnam vs Cambodia (Kampuchea) 1978 - 1978 32,500 1
Uganda vs Tanzania 1978 - 1979 3,847 1
Nicaraguan Gvt vs Sandinistas 1978 - 1979 10,000 1 [1]
Iranian Revolution 1978 - 1979 1,100 1
Sino-Vietnamese War 1978 - 1988 47,046 1
Afghanistan Civil War 1978 - 2000 546,670 1 [4]
Syrian Govt vs Muslim Brotherhood 1979 - 1982 2,075 1
El Salvador Gvt vs FMLN Guerrillas 1979 - 1991 51,809 1 [2]
Cambodian Govt vs Khmer Rouge 1979 - 1998 87,499 1
Iran vs rebel groups (MEK,PJAK etc) 1979 - 2011 5,015 1 [1]
Iran vs Iraq 1980 - 1988 644,500 1 [5]
Uganda Civil War 1980 - 2015 128,627 1 [1]
South Africa vs ANC 1981 - 1988 4,087 1
Nicaragua Govt vs Contras 1981 - 1990 29,965 1 [1]
Falklands War 1982 - 1982 964 1 [5]
Iraq Government vs SCIRI 1982 - 1996 1,165 1
Iraq vs Kurdistan (KDP/PUK) 1982 - 1996 21,552 1 [1]
Somalia Civil War 1982 - 2015 52,825 1 [1]
Indian Govt vs Sikh insurgents 1983 - 1993 14,551 1 [2]
Sudan Government vs Militias 1983 - 2015 98,483 1 [1]
Sri Lankan Govt vs Tamil Militants (LTTE) 1984 - 2009 73,837 1 [8]
Indian-Pakistani Dispute and Intrastate Insurgency in Kashmir 1984 - 2015 22,139 1 [13]
Turkey Gov vs Kurdistan Guerilla (PPK) 1984 - 2015 29,516 1 [1]
South Yemen Coup 1986 - 1986 10,000 1
Chadian-Lybian War (Aouzou Strip) 1987 - 1987 8,500 1
Romanian Revolution 1989 - 1989 909 1
Panama Coup and US Invasion 1989 - 1989 920 1
Liberia Civil War 1989 - 2003 23,249 1 [2]
First Gulf War 1990 - 1991 23,946 1 [4]
Rwanda Civil War (Hutus vs Tutsis) 1990 - 1994 507,754 1 [4]
Indonesia Gvt vs Aceh Liberation movement 1990 - 2005 3,754 1
Southern Lebanon War 1990 - 2006 1,716 1 [5]
Nagorno-Karabakh War 1990 - 2015 5,570 1 [1]
Northern Mali Conflict 1990 - 2016 3,208 1 U
Sierra Leone Civil War 1991 - 2000 20,157 1 [2] U
Burundi Civil War 1991 - 2008 15,651 1 [2]
Georgia civil war and South Ossetia and Abkhazia conflict 1991 - 2008 3,387 1
Indian Govt vs Maoist Guerillas 1991 - 2015 7,356 1
Algeria Govt vs Islamic rebels, GIA, AIS, AQIM 1991 - 2015 20,742 1 [1]
Croatian Govt, irregulars vs Serbian Govt, irregulars, Rep. Krajina 1992 - 1995 4,512 1 [3]
Bosnian Govt vs Serbian and Croatian Insurgents 1992 - 1995 26,328 1 [7]
Tajikistan Govt vs Opposition 1992 - 2011 9,145 1
Hunde and allies vs Hutu, Banyarwanda 1993 - 1996 4,303 2 U
Congo Brazzaville Civil War 1993 - 2002 15,541 1 [1]
Russia vs Chechnyan Secessionists, the Caucasus Emirate, IS 1993 - 2016 23,577 1 [7] U
North Yemen vs Secessionists 1994 - 1994 1,489 1
First and Second Congo Wars 1996 - 2002 80,018 1 [1]
Nepal Civil War 1996 - 2006 12,282 1 [1]
Yugoslavia vs NATO Forces and UCK Guerilla 1998 - 1999 3,631 1 [6]
Ituri Conflict 1999 - 2004 12,494 2
Eritrea vs Ethiopia 2000 - 2000 98,192 1 [1]
al-Qaida vs USA and allies 2001 - 2016 8,364 1 [12] U
Afghanistan war 2001 - 2016 93,043 1 [5] U
Civil War in Côte d Ivoire 2002 - 2004 1,371 1 [1]
Iraq vs US led coalition 2003 - 2003 7,927 1 [10]
Iraqi Insurgency 2004 - 2016 58,716 1 [9] U
Mexican Drug War 2004 - 2016 14,528 2 [3] U
Kivu Conflict 2005 - 2016 10,949 1 U
Lou Nuer vs Murle (Jonglei conflict) 2006 - 2013 3,362 2 [1]
Waziristan conflict 2007 - 2016 30,538 1 [1] U
Nigeria, Chad, Niger and Cameroon vs Boko Haram (ISWAP) 2009 - 2016 23,869 1 U
Yemeni Civil War 2009 - 2016 13,630 1 U
Libyan Civil War 2011 - 2016 4,986 1 [3] U
Syrian civil war 2011 - 2016 185,165 1 [3] U
South Sudan Civil War 2011 - 2016 5,294 1 [1] U
Sectarian Conflict in the Central African Republic 2012 - 2016 6,167 1 U
Eastern Ukraine War 2014 - 2016 5,703 1 [2] U

 

Note about search on a specific nation: results produced by this feature are incomplete and inconsistent and should be seen as a means to narrow down the list rather than anything else. Work is being done to correct mistakes and standardize the parameters. At the bottom of the list of countries are some nations that do not exist in a similar form today.

Note about search on a specific year: "ongoing armed conflict" does not imply that all of the conflicts presented for a specific year should be classified as war.

Note about search on a specific time period: finds all wars that started after a specific year (1st search parameter) and ended before a specific year (2nd param).

Note about categories: this new feature is currently being tested and the content of these categories may be incomplete or inconsistent. More categories will be added in the future.