* 1904 British expedition to Tibet
* 1904-1905 Russo-Japanese War
* 1905 Revolution of 1905 in Russia
* 1911-1912 Turco-Italian War
* 1912-1913 Balkan Wars
o 1912-1913 First Balkan War
o 1913 Second Balkan War
* 1914-1918 World War I
* 1916 Easter Rising rebellion in Ireland
* 1917-1918 Russian Revolution
* 1917-1920 Estonian Liberation War
* 1918 Finnish Civil War
* 1918-1920 Armenian-Azeri War
* 1918-1919 Sochi conflict
* 1918 Georgian-Armenian War
* 1918-1919 Czechoslovakia - Hungary War
* 1918-1922 Russian Civil War
o 1918 Petsamo expedition
o 1918 Viena expedition
o 1918-1919 Polar Bear Expedition
o 1919 Aunus expedition
o 1921-1922 East Karelian Rising by Karelian Forest Guerillas
* 1918-1919 Polish-Ukrainian War
* 1918-1919 Great Poland Uprising
* 1919 Czechoslovak-Polish war
* 1919 Third Anglo-Afghan War
* 1919 First Silesian Uprising
* 1919-1921 Polish-Soviet war
* 1919-1921 Irish War of Independence
* 1919-1922 Turkish War of Independence
o 1920-1922 Second Greco-Turkish War (aka War in Asia Minor)
* 1920 Polish-Lithuanian War
* 1920 Second Silesian Uprising
* 1921 Third Silesian Uprising
* 1922-1923 Irish Civil War
* 1926-1927 Northern Expedition in China
* 1927-1937 Chinese Civil War
* 1932-1935 Chaco War
* 1935-1936 Second Italo-Abyssinian War
* 1936-1939 Spanish Civil War
* 1937-1945 World War II
o 1937-1945 Second Sino-Japanese War
o 1937-1945 Pacific War
o 1939 Soviet-Japanese Border War (1939)
o 1939-1940 Winter War
o 1939 Slovak-Hungarian War
o 1940-1941 French-Thai War
o 1941 Anglo-Iraqi War
o 1941-1944 Continuation War
o 1944-1945 Slovak National Uprising
o 1944-1945 Lapland War
* 1941-1942 Ecuadorian-Peruvian War
* 1944-1949 Greek Civil War
* 1945-1949 Chinese Civil War
* 1945-1949 Indonesian National Revolution
* 1946-1954 First Indochina War
* 1947 Paraguayan Civil War
* 1947-1949 Indo-Pakistani War of 1947
* 1948 Costa Rica Civil War
* 1948-1949 First Arab-Israeli War
* [948-1960 Malayan Emergency
* 1949-1959 Chineses Invasion and Occupation of Tibet
* 1950-1953 Korean War
* 1952-1960 Mau Mau Uprising in Kenya
* 1954-1975 Second Indochina War
o 1954-1975 Vietnam War
o 1959-1975 Laotian Civil War
o 1962-1975 Secret War
o 1967-1975 Cambodian Civil War
* 1954-1962 Algerian War of Independence
* 1955-1972 First Sudanese Civil War
* 1956 Suez War (Second Arab-Israeli War)
* 1956 Hungarian Uprising * 1956-1959 Cuban Revolution
* 1957-1958 Ifni War
* 1958 Lebanon crisis of 1958
* 1960-1965 "Congo Crisis"
* 1960-1996 Guatemalan Civil War
* 1961 Bay of Pigs Invasion
* 1961-1975 Angolan War of Independence
* 1962-1975 Guinea-Bissauan War of Independence
* 1962-1963 Sino-Indian War
* 1963 Sand War
* 1962-1966 Indonesia-Malaysia confrontation
* 1962-1970 Yemen Civil War
* 1962-1975 Dhofar Rebellion
* 1964-1975 Mozambique's War of Independence
* 1965 Indo-Pakistani War of 1965
* 1965-1996 Chad Civil War
* 1965-1966 Indonesian Civil War
* 1966-1988 Namibian War of Independence
* 1966-1979 Second Chimurenga(Rhodesian Bush War)
* 1969-Present Communist and Islamic Insurgency in the Philippines
* 1967 Six-Day War (Third Arab-Israeli War)
* 1967-1970 Nigerian Civil War
* 1968-1970 War of Attrition
* 1969 Football War
* 1969 Sino-Soviet border conflict
* 1969-1994 The Troubles in Northern Ireland
* 1970 Black September
* 1971 Bangladesh Liberation War
* 1971 Indo-Pakistani War of 1971
* 1973 Yom Kippur War (Fourth Arab-Israeli War)
* 1974 Turkish invasion of Cyprus
* 1974-1991 Ethiopian Civil War
* 1975-1989 Angolan Civil War
* 1975-1991 Western Sahara conflict
* 1975-1991 Lebanese Civil War
* 1975-1998 War of Independence in East Timor
* 1975-1992 Mozambican Civil War
* 1975-2006 Independence War in Cabinda
* 1977 Libyan-Egyptian War
* 1977-1978 Ogaden War
* 1977-1991 Cambodian-Vietnamese War
* 1978-2005 The Aceh War
* 1978-1988 Ugandan Civil War
* 1979 Sino-Vietnamese War
* 1979 Libyan Invasion of Chad
* 1979-1989 Soviet war in Afghanistan
* 1980-1992 El Salvador Civil War
* 1980-1988 Iran-Iraq War
* 1981 Paquisha War
* 1982 Falklands War
* 1982 1982 Lebanon War
* 1983 Invasion of Grenada
* 1983-2000 Ethnic conflict in Sri Lanka
* 1983-2005 Second Sudanese Civil War
* 1984-present Free Papua Movement
* 1985 Christmas War
* 1987-1993 First Intifada
* 1988-1994 Nagorno-Karabakh war
* 1989-1991 Mauritania-Senegal Border War
* 1989-1990 Invasion of Panama
* 1989-1997 First Liberian Civil War
* 1989 Romanian Revolution
* 1990-1991 Gulf War
* 1990-1994 Rwandan Civil War
* 1990-1998 Tuareg Rebellion
* 1991-2002 Algerian Civil War
* 1991-2001 Yugoslav Wars
o 1991 Slovenian War
o 1991-1995 Croatian War of Independence
o 1992-1995 Bosnian War
o 1998-1999 Kosovo War
* 1991-1993 Georgian Civil War
o 1991-1992 Georgian-Ossetian Conflict
o 1992-1993 Georgian-Abkhaz Conflict
* 1991-1997 Sierra Leone Civil War
* 1992-1997 Tajikistan Civil War
* 1993-1999 Burundi Civil War
* 1994 1994 Yemeni Civil War
* 1994-1996 First Chechen War
* 1995 NATO bombing of Republika Srpska
* 1995 Cenepa War
* 1996-1997 First Congo War
* 1998-2000 Ethiopia-Eritrea War
* 1998-2002 Second Congo War
* 1999 Kargil War
* 1999 Dagestan War
* 1999-2003 Second Liberian Civil War
* 2000-Present Al-Aqsa Intifada
* 2001 2001 Macedonia conflict
* 2001-Present United States war in Afghanistan
* 2001-Present Civil War in Côte d'Ivoire
* 2003-present Balochistan conflict, Pakistan
* 2003-present Darfur conflict, Sudan
* 2003-present Iraq War
* 2004 Haiti rebellion
* 2004-2006 Waziristan War, Pakistan
* 2005-2006 Chad-Sudan conflict
* 2005-present Western Sahara Independence Intifada
* 2006 Israel-Lebanon crisis