War or conflict Key Start date End date Duration Reconquista 718 1492 774 years Anglo-French Wars 1109 1815 706 years Roman–Persian Wars 54 BC 628 681 years Byzantine–Bulgarian wars 680 1355 675 years Roman-Germanic wars 113 BC 476 588 years [ 1] Arab–Byzantine wars 629 1180 551 years Yaqui Wars 1533 1929 396 years Yemeni–Ottoman conflicts 1538 1911 373 years Moroccan–Portuguese conflicts 1415 1769 354 years Russo-Turkish wars 1568 1918 350 years Arauco War 1536 1883 347 years Dano-Swedish wars 1470 1814 344 years Three Hundred and Thirty Five Years' War 1651 1986 335 years, 2 weeks and 4 days Spanish–Moro conflict 1565 1898 333 years Apache–Mexico Wars 1600 1915 315 years American Indian Wars 1609 1924 315 years[ citation needed ] Ottoman–Persian Wars 1514 1823 309 years Burmese-Siamese wars 1547 1855 308 years Han–Xiongnu War 200 BC 91 290 years Navajo Wars 1600 1866 266 years Ottoman–Habsburg wars 1526 1791 265 years Byzantine–Seljuk wars 1048 1308 260 years[ citation needed ] Anglo-Scottish Wars 1296 1547 251 years, 5 months, 2 weeks and 1 day Chechen–Russian conflict 1785 2017 232 years Warring States period 453 BC 223 BC 230 years Muslim conquests of Afghanistan 642 870 228 years Polish-Russian Wars 1577 1794 217 years, 10 months, 2 weeks and 1 day Byzantine–Ottoman wars 1265 1479 214 years[ citation needed ] Polish–Teutonic War 1308 1521 213 years Roman conquest of the Iberian Peninsula 218 BC 19 BC 199 years Russian conquest of Siberia 1580 1778 198 years Crusades 1096 1291 194 years, 9 months and 3 days Cossack uprisings 1591 1775 184 years Byzantine–Lombard wars 568 751 183 years Russo-Persian Wars 1651 1828 177 years Spanish conquest of Guatemala 1524 1697 173 years Spanish conquest of Chiapas 1523 1695 172 years Genoese–Mongol Wars 1307 1478 171 years Muscovite–Lithuanian Wars 1368 1537 169 years Mughal–Sikh wars 1621 1788 167 years Ottoman–Hungarian wars 1366 1526 160 years Polish–Swedish wars 1563 1721 158 years Anglo-Dutch Wars 1652 1810 158 years Sengoku period 1467 1615 148 years Australian frontier wars 1788 1934 146 years Hook and Cod wars 1350 1490 140 years Mongol invasions and conquests 1206 1337 131 years Chola-Chalakya Wars 992 1120 128 years Early Muslim conquests 622 750 128 years Second Hundred Years' War 1689 1815 126 years Punic Wars 264 BC 146 BC 118 years Hundred Years' War 1337 1453 116 years [ 2] Russo-Kazan Wars 1437 1552 115 years Norwegian civil wars 1130 1240 110 years Tuareg rebellions * 1916 Ongoing 109 years Jin–Song Wars 1125 1234 109 years Seleucid–Parthian Wars 238 BC 129 BC 109 years Crisis of the Roman Republic 135 BC 27 BC 108 years Kurdish separatism in Iran * 1918 Ongoing 107 years Georgian–Seljuk wars 1099 1203 104 years Hephthalite–Sasanian Wars 459 562 103 years Kurdish rebellions in Turkey * 6 March 1921 Ongoing 104 years, 5 months, 3 weeks and 3 days Montenegro-Japan War [ 3] [ 4] [ 5] [ 6] 1904 2008 102 years, 4 months, 1 week and 1 day Russo-Circassian War 1763 1864 100 years, 10 months and 4 days Xhosa Wars 1779 1879 100 years Zemene Mesafint 1755 1855 100 years Xinjiang conflict * 1931 Ongoing 94 years Beaver Wars 1609 1701 92 years Afghan–Sikh Wars 1751 1837 86 years Iraqi–Kurdish conflict 1918 2003 85 years Dagohoy rebellion 24 January 1744 31 August 1829 85 years, 7 months and 1 week Anglo-Afghan War 1839 1919 80 years Eighty Years' War 1568 1648 80 years [ 7] Korean conflict * 15 August 1945 Ongoing 80 years, 2 weeks and 1 day Spanish conquest of Petén 1618 1697 79 years Rohingya insurgency * 1947 Ongoing 78 years Muslim conquest of Transoxiana 673 751 78 years Indo-Pakistani wars and conflicts * 22 October 1947 Ongoing 77 years, 10 months, 1 week and 1 day Kashmir conflict * 22 October 1947 Ongoing 77 years, 10 months, 1 week and 1 day Internal conflict in Myanmar * 2 April 1948 Ongoing 77 years, 4 months and 4 weeks Arab–Israeli conflict * 15 May 1948 Ongoing 77 years, 3 months, 2 weeks and 1 day Anglo-Ashanti wars 1823 1900 77 years Umayyad conquest of Hispania 711 788 77 years Insurgency in Balochistan * July 1948 Ongoing 77 years, 1 month, 4 weeks and 1 day Ethiopian-Somali wars * 23 September 1948 Ongoing 76 years, 11 months and 1 week Karen conflict * 31 January 1949 Ongoing 76 years, 6 months, 4 weeks and 2 days [ 8] Afghanistan–Pakistan border skirmishes * March 1949 Ongoing 76 years, 5 months, 4 weeks and 1 day Muslim conquest of Sicily June 827 August 902 75 years and 2 months Apache Wars 1849 1924 75 years French conquest of Algeria 1830 1903 73 years Dzungar–Qing Wars 1687 1758 71 years Jewish–Roman wars 66 136 70 years Argentine Civil Wars 1814 1880 66 years Italian Wars 1494 1559 65 years South Thailand insurgency * 1960 Ongoing 65 years Darfur Wars of Succession 1722 1786 64 years Papua conflict * 1 October 1962 Ongoing 62 years, 10 months, 4 weeks and 1 day Cross border attacks in Sabah * 8 December 1962 Ongoing 62 years, 8 months, 3 weeks and 1 day Insurgency in Northeast India * 1963 Ongoing 62 years Muslim conquest of the Maghreb 647 709 62 years Anglo-Burmese Wars 5 March 1824 29 November 1885 61 years, 8 months, 3 weeks and 3 days Colombian conflict * 27 May 1964 Ongoing 61 years, 3 months and 3 days Insurgency in Manipur * 24 November 1964 Ongoing 60 years, 9 months and 6 days Sixty Years' War 1754 1814 60 years Dutch–Portuguese War 1601 1661 60 years Lelantine War 710 BC 650 BC 60 years Israeli–Lebanese conflict 14 May 1948 18 August 2006 58 years, 3 months and 4 days Naxalite–Maoist insurgency * 18 May 1967 Ongoing 58 years, 3 months, 1 week and 5 days Texas–Indian wars 1820 1875 55 years Civil conflict in the Philippines * 29 March 1969 Ongoing 56 years, 5 months and 1 day Western Sahara conflict * 17 June 1970 Ongoing 55 years, 2 months, 1 week and 6 days Basque conflict 31 July 1959 20 October 2011 52 years, 2 months, 2 weeks and 6 days Bulgarian–Ottoman wars 1344 1396 52 years Galicia–Volhynia Wars 1340 1392 52 years Communist insurgency in Burma 1939 1989 50 years Byzantine conquest of Bulgaria 968 1018 50 years Greco-Persian Wars 499 BC 449 BC 50 years [ 9] Moro conflict 29 March 1969 22 February 2019 49 years, 10 months, 3 weeks and 3 days Cabinda War * 8 November 1975 Ongoing 49 years, 9 months, 3 weeks and 1 day Comanche–Mexico Wars 1821 1870 49 years Whisky War (Liquor War) 17 December 1973 14 June 2022 48 years, 5 months and 4 weeks Afghanistan conflict * 27 April 1978 Ongoing 47 years, 4 months and 3 days[ citation needed ] Wars of the Diadochi 322 BC 275 BC 47 years [ 10] Caucasian War 1817 1864 47 years Kurdish–Turkish conflict (1978–2025) 27 November 1978 12 May 2025 46 years, 5 months, 2 weeks and 1 day Assam separatist movements * 7 April 1979 Ongoing 46 years, 4 months, 3 weeks and 2 days Cold War (Indirect War) (outline) 16 April 1946 26 December 1991 45 years, 8 months, 1 week and 3 days Internal conflict in Peru * 17 May 1980 Ongoing 45 years, 3 months, 1 week and 6 days Maoist insurgency in Turkey * 12 September 1980 Ongoing 44 years, 11 months, 2 weeks and 4 days Chadian Civil Wars 1 November 1965 15 January 2010 44 years, 2 months and 2 weeks Kongo Civil War 29 October 1665 4 October 1709 43 years, 11 months and 5 days Sino-Dutch conflicts 1620 1662 42 years Thirty-Eight Years' War 770 811 41 years[ citation needed ] Umayyad invasion of Gaul 719 759 40 years Spanish conquest of the Inca Empire 1532 1572 40 years Chichimeca War 1550 1590 40 years Polish–Czechoslovak border conflicts 1918 1958 40 years Comanche Wars 1836 1875 39 years Bab al-Tabbaneh–Jabal Mohsen conflict 1976 2015 39 years Lord's Resistance Army insurgency 1987 2024 37 years Sectarianism in Pakistan * 1987 Ongoing 38 years Abkhaz–Georgian conflict * 18 March 1989 Ongoing 36 years, 5 months, 1 week and 5 days Guatemalan Civil War 13 November 1960 29 December 1996 36 years, 1 month, 2 weeks and 2 days [ 11] French Wars of Religion 1562 1598 36 years Banana Wars 1898 1934 36 years Anglo-Powhatan Wars 1610 1646 36 years Internal conflict in Bangladesh * 1989 Ongoing 36 years Insurgency in Jammu and Kashmir * 13 July 1989 Ongoing 36 years, 1 month, 2 weeks and 3 days Nagorno-Karabakh conflict 20 February 1988 1 January 2024 35 years, 10 months, 1 week and 5 days Georgian–Ossetian conflict * 10 November 1989 Ongoing 35 years, 9 months, 2 weeks and 6 days DHKP/C insurgency in Turkey * 1 April 1990 Ongoing 35 years, 4 months, 4 weeks and 1 day Holy Man's Rebellion 1901 1936 35 years Somali Civil War * May 1991 [ nb 1] Ongoing 34 years, 3 months, 4 weeks and 1 day Oromo conflict * 1992 Ongoing 33 years Ayutthaya-Lan Na War 1441 1474 33 years Wars of the Roses 1455 1487 32 years [ 19] First War of Scottish Independence 1296 1328 32 years [ 20] Casamance conflict 1982 2014 32 years Anglo-Mysore Wars 1767 1799 32 years Libyan resistance movement 1911 1943 32 years Second Viking invasion of the British Isles 980 1012 32 years Insurgency in Laos 3 December 1975 2008 32 years Aceh War 1873 1904 31 years [ 21] Āfāqī Khoja Holy War 1826 1857 31 years The Troubles 1968 1998 30 years Thirty Years' War 1618 1648 30 years [ 22] Chiapas conflict 1994 2014 31 years Eritrean War of Independence 1 September 1961 29 May 1991 29 years, 8 months, 3 weeks and 2 days Norman Conquest of Sicily May 1061 February 1091 29 years and 9 months Murid War 1830 1859 29 years Insurgency in Meghalaya * 1996 Ongoing 29 years Allied Democratic Forces insurgency * 1996 Ongoing 29 years Insurgency in Aceh 4 December 1976 15 August 2005 28 years, 8 months, 1 week and 4 days Intercommunal conflict in Mandatory Palestine 1 March 1920 15 May 1948 28 years, 2 months and 2 weeks Portuguese Restoration War 1640 1668 28 years [ 23] Nicaraguan Revolution 1962 1990 28 years FULRO insurgency 20 September 1964 October 1992 28 years Communist insurgency in Sarawak December 1962 3 November 1990 27 years, 11 months and 2 days Peloponnesian War 431 BC 404 BC 27 years [ 24] New Zealand Wars 1845 1872 27 years Angolan Civil War 1975 2002 27 years [ 25] Communal conflicts in Nigeria * 1998 Ongoing 27 years Russo-Finnish wars 27 January 1918 19 September 1944 26 years, 7 months, 3 weeks and 2 days Al-Qaeda insurgency in Yemen * 30 December 1998 Ongoing 26 years and 8 months Sri Lankan Civil War 23 July 1983 18 May 2009 25 years, 9 months, 3 weeks and 4 days Mughal–Maratha Wars September 1681 May 1707 25 years and 8 months Livonian War 1558 1583 25 years [ 26] Spanish American wars of independence 1808 1833 25 years Insurgency in Ogaden 22 February 1994 12 August 2018 24 years, 5 months and 3 weeks South African Border War 26 August 1966 21 March 1990 24 years Indonesian occupation of East Timor 7 December 1975 31 October 1999 23 years, 10 months, 3 weeks and 3 days War on terror * 14 September 2001 Ongoing [ 27] 23 years, 11 months, 2 weeks and 2 days Great French War 20 April 1792 20 November 1815 23 years and 7 months [ 28] Insurgency in the Maghreb * 11 April 2002 Ongoing 23 years, 4 months, 2 weeks and 5 days First Punic War 264 BC 241 BC 23 years Second Afar insurgency 1995 18 July 2018 23 years Silesian Wars 1740 1763 23 years Conflict in the Niger Delta * 12 March 2003 Ongoing 22 years, 5 months, 2 weeks and 4 days War in Darfur * 26 February 2003 Ongoing 22 years, 6 months and 4 days Laotian Civil War 9 November 1953 2 December 1975 22 years, 3 weeks and 2 days Second Sudanese Civil War 1983 2005 22 years Italian Unification Wars 1848 1870 22 years Occupation of Araucanía 1861 1883 22 years Norman conquest of England 1066 1088 22 years Kandyan Wars 1796 1818 22 years Little War in Hungary 1530 1552 22 years Chinese Civil War 1 August 1927 7 December 1949 22 years Communist insurgency in Malaysia (1968–1989) 17 June 1968 2 December 1989 21 years, 5 months, 2 weeks and 1 day Insurgency in Khyber Pakhtunkhwa * 16 March 2004 Ongoing 21 years, 5 months and 2 weeks Iran–PJAK conflict * 1 April 2004 Ongoing 21 years, 4 months, 4 weeks and 1 day Kivu conflict * 2004 Ongoing 21 years Sistan and Baluchestan insurgency * 2004 Ongoing 21 years United States occupation of Nicaragua 1912 1933 21 years Lazic War 541 562 21 years Great Northern War 1700 1721 21 years [ 29] Ottoman conquest of Habesh 1557 1578 21 years Muslim conquest of Persia 633 654 21 years Eumeralla Wars 1840 1860 20 years War of the Sicilian Vespers 1282 1302 20 years Somaliland campaign 1900 1920 20 years Chittagong Hill Tracts conflict 1977 2 December 1997 20 years War in Afghanistan (2001–2021) 7 October 2001 15 August 2021 19 years, 10 months, 1 week and 1 day Insurgency in Paraguay * 27 August 2005 Ongoing 20 years and 3 days Vietnam War (outline) 1 November 1955 30 April 1975 19 years, 5 months, 4 weeks and 1 day [ 30] Byzantine–Sasanian War of 572–591 572 591 19 years Miao Rebellion (1854–1873) 1854 1873 19 years Gothic War 535 554 19 years[ citation needed ] Jeroboam's Revolt 931 BC 913 BC 18 years Mexican drug war * 11 December 2006 Ongoing 18 years, 8 months, 2 weeks and 5 days Communist insurgency in Thailand 1965 1983 18 years Basmachi movement 1916 1934 18 years Mahdist War 1881 1899 18 years Second Punic War 218 BC 201 BC 17 years Ethiopian Civil War 12 September 1974 4 June 1991 16 years, 8 months, 3 weeks and 2 days First Sudanese Civil War 18 August 1955 27 March 1972 16 years, 7 months, 1 week and 2 days Bolivian War of Independence 1809 1825 16 years Chilean War of Independence 1810 1826 16 years Western Sahara War 30 October 1975 6 September 1991 15 years, 10 months and 1 week Great Turkish War 14 July 1683 26 January 1699 15 years, 6 months, 1 week and 5 days Lebanese Civil War 13 April 1975 13 October 1990 15 years and 6 months Rhodesian Bush War 4 July 1964 12 December 1979 15 years, 5 months, 1 week and 1 day Morean War 1684 1699 15 years Jewish–Babylonian War 601 BC 586 BC 15 years Cambodian–Vietnamese War 30 April 1977 23 October 1991 14 years, 5 months, 3 weeks and 2 days Syrian Civil War * 15 March 2011 Ongoing [ nb 2] 14 years, 5 months, 2 weeks and 1 day Third Indochina War 1978 1992 14 years Dhofar Rebellion 1962 1976 14 years Years of Lead (Italy) 1968 1982 14 years Taiping Rebellion 1850 1864 14 years Russo-Turkish War (1686–1700) 1686 1700 14 years Abyssinian–Adal war 1529 1543 14 years Marcomannic Wars 166 180 14 years Second Sino-Japanese War 18 September 1931 9 September 1945 13 years, 11 months, 3 weeks and 1 day Portuguese Colonial War 4 February 1961 25 April 1974 13 years, 2 months and 3 weeks Darul Islam rebellion August 1949 September 1962 13 years, 3 weeks and 5 days War of the Spanish Succession 9 July 1702 11 July 1715 13 years and 2 days Peruvian War of Independence 1811 1824 13 years Venezuelan War of Independence 1810 1823 13 years Wars of Alexander the Great 336 BC 323 BC 13 years Napoleonic Wars 18 May 1803 20 November 1815 12 years, 6 months and 2 days [ 28] Burundian Civil War 21 October 1993 15 April 2006 12 years, 5 months, 3 weeks and 4 days Haitian Revolution 21 August 1791 1 January 1804 12 years, 4 months, 1 week and 4 days Malayan Emergency 16 June 1948 12 July 1960 12 years, 3 weeks and 5 days Salvadoran Civil War 15 October 1979 16 January 1992 12 years, 3 months and 1 day Iraqi no-fly zones conflict 1991 2003 12 years Wars of the Three Kingdoms 1639 1651 12 years Cimbrian War 113 BC 101 BC 12 years Sino-Vietnamese conflicts (1979–1991) 1979 1991 12 years Guinea-Bissau War of Independence 23 January 1963 10 September 1974 11 years, 7 months, 2 weeks and 4 days Queen Anne's War 8 March 1702 13 July 1713 11 years, 4 months and 5 days Russo-Ukrainian War * 20 February 2014 Ongoing 11 years, 6 months, 1 week and 3 days Mexican War of Independence 16 September 1810 27 September 1821 11 years, 1 week and 4 days Dano-Swedish War 1501 1512 11 years Pool Department insurgency 1997 2008 11 years Insurgency in Punjab 1984 1995 11 years Sierra Leone Civil War 23 March 1991 18 January 2002 10 years, 9 months, 3 weeks and 5 days Nepalese Civil War 13 February 1996 21 November 2006 10 years, 9 months, 1 week and 1 day Yemeni Civil War * 16 September 2014 Ongoing 10 years, 11 months and 2 weeks Houthi insurgency in Yemen 18 June 2004 6 February 2015 10 years, 7 months, 2 weeks and 5 days Yugoslav Wars 31 March 1991 12 November 2001 10 years, 7 months, 1 week and 5 days Algerian Civil War 26 December 1991 8 February 2002 10 years, 1 month, 1 week and 6 days Somaliland War of Independence 6 April 1981 18 May 1991 10 years, 1 month, 1 week and 5 days Soviet–Afghan War 24 December 1979 15 February 1989 9 years, 1 month, 3 weeks and 1 day Iraq War 20 March 2003 15 December 2011 8 years, 8 months, 3 weeks and 4 days American Revolutionary War 19 April 1775 3 September 1783 8 years, 4 months, 2 weeks and 1 day Aksumite-Persian wars 570 578 8 years Iran–Iraq War 22 September 1980 20 August 1988 7 years, 10 months, 4 weeks and 1 day War of the Austrian Succession 16 December 1740 18 October 1748 7 years, 10 months and 2 days World War II 1 September 1939 2 September 1945 6 years and 1 day Jebel Akhdar War 30 January 1954 10 October 1959 5 years, 8 months, 1 week and 3 days Paraguayan War 1864 1870 5 years, 3 months, 2 weeks and 2 days Second Congo War (African World War) 2 August 1998 18 June 2003 4 years, 10 months, 2 weeks and 2 days Russian Civil War 7 November 1917 16 June 1923 4 years, 7 months, 1 week and 2 days World War I (outline) 28 July 1914 11 November 1918 4 years, 3 months and 2 weeks American Civil War (outline ) 12 April 1861 9 April 1865 3 years, 11 months and 4 weeks Philippine-American War 4 February 1899 2 July 1902 3 years, 3 months, 4 weeks and 1 day War of Attrition 1 July 1967 7 August 1970 3 years, 1 month and 6 days Korean War 25 June 1950 27 July 1953 3 years, 1 month and 2 days Spanish Civil War 17 July 1936 1 April 1939 2 years, 9 months, 2 weeks and 1 day War of 1812 18 June 1812 17 February 1815 2 years, 8 months, 4 weeks and 2 days Nigerian Civil War 6 July 1967 15 January 1970 2 years, 7 months, 1 week and 2 days Crimean War 16 October 1853 30 March 1856 2 years, 5 months and 2 weeks Tigray War 3 November 2020 3 November 2022 2 years War of the Polish Succession 10 October 1733 3 October 1735 1 year, 11 months, 3 weeks and 2 days Mexican–American War 25 April 1846 2 February 1848 1 year, 9 months, 1 week and 1 day Toyota War 16 December 1986 11 September 1987 8 months, 3 weeks and 5 days Gulf War 2 August 1990 28 February 1991 6 months, 3 weeks and 5 days Spanish–American War 21 April 1898 13 August 1898 3 months, 3 weeks and 2 days Ilinden–Preobrazhenie Uprising 2 August 1903 November 1903 2 or 3 months Falklands War 2 April 1982 14 June 1982 2 months, 1 week and 5 days Austro-Prussian War 14 June 1866 22 July 1866 1 month, 1 week and 1 day Turkish-Cypriot War of 1974 20 July 1974 18 August 1974 4 weeks and 1 day Serbo-Bulgarian War 14 November 1885 28 November 1885 2 weeks Indo-Pakistani War of 1971 3 December 1971 16 December 1971 1 week and 6 days Iran–Israel War 13 June 2025 24 June 2025 1 week and 5 days Russo-Georgian War 1 August 2008 12 August 2008 1 week and 4 days Six Day War 5 June 1967 10 June 1967 6 days Rwandan-Ugandan War 5 June 2000 10 June 2000 5 days Football War 14 July 1969 18 July 1969 4 days Wagner Group rebellion 23 June 2023 24 June 2023 1 day 2023 Nagorno-Karabakh clashes 19 September 2023 (13:17) 20 September 2023 (13:00) 23 hours 43 minutes 2008 Invasion of Anjoun 25 March 2008 (05:00) 25 March 2008 (12:00) 7 hours Anglo-Zanzibar war 27 August 1896 (09:00) 27 August 1896 (09:37) 38 minutes