1091 – Battle of Levounion: The Pechenegs are defeated by Byzantine Emperor Alexius I.
1386 – Battle of the Vikhra River: The Principality of Smolensk is defeated by the Grand Duchy of Lithuania and becomes its vassal.
1429 – Joan of Arc arrives to relieve the Siege of Orleans.
1483 – Gran Canaria, the main island of the Canary Islands is conquered by the Kingdom of Castile.
1521 – Swedish War of Liberation: Swedish troops under Gustav Vasa defeat a Danish force under Didrik Slagheck in the Battle of Västerås and soon capture the city of Västerås. The Danish-held castle, however, does not surrender to the Swedes until 31 January the following year, after a nine-month siege.
1770 – James Cook arrives at and names Botany Bay, Australia.
1781 – American Revolutionary War: British and French ships clash in the Battle of Fort Royal off the coast of Martinique.
1832 – Évariste Galois is released from prison.
1861 – American Civil War: Maryland's House of Delegates votes not to secede from the Union.
1862 – American Civil War: New Orleans, Louisiana falls to Union forces under Admiral David Farragut.
1864 – Theta Xi fraternity is founded at Rensselaer Polytechnic Institute, the only fraternity to be founded during the American Civil War.
1882 – The "Elektromote" – forerunner of the trolleybus – is tested by Ernst Werner von Siemens in Berlin.
1903 – A 30 million cubic-metre landslide kills 70 in Frank, North-West Territories, Canada.
1910 – The Parliament of the United Kingdom passes the People's Budget, the first budget in British history with the expressed intent of redistributing wealth among the British public.
1916 – World War I: The British 6th Indian Division surrenders to Ottoman Forces at the Siege of Kut in one of the largest surrenders of British forces up to that point.
1916 – Easter Rising: Martial law in Ireland is lifted and the rebellion is officially over with the surrender of Irish nationalists to British authorities in Dublin.
1944 – World War II: British agent Nancy Wake, a leading figure in the French Resistance and the Gestapo's most wanted person, parachutes back into France to become a liaison between London and the local maquis group.
1945 – World War II: The German army in Italy unconditionally surrenders to the Allies.
1945 – World War II: Start of Operation Manna.
1945 – World War II: The Captain class frigate HMS Goodall K479 is torpedoed by U-286 outside the Kola Inlet becoming the last ship of the Royal Navy sunk in the European theatre of World War II.
1945 – World War II – Fuehrerbunker: Adolf Hitler marries his longtime partner Eva Braun in a Berlin bunker and designates Admiral Karl Dönitz as his successor. Both Hitler and Braun commit suicide the following day.
1945 – The Dachau concentration camp is liberated by United States troops.
1945 – The Italian commune of Fornovo di Taro is liberated from German forces by Brazilian forces.
1946 – The International Military Tribunal for the Far East convenes and indicts former Prime Minister of Japan Hideki Tojo and 28 former Japanese leaders for war crimes.
1946 – Father Divine, a controversial religious leader who claims to be God, marries the much-younger Edna Rose Ritchings, a celebrated anniversary in the International Peace Mission movement.
1951 – Tibetan delegates to the Central People's Government arrive in Beijing and draft a Seventeen Point Agreement for Chinese sovereignty and Tibetan autonomy.
1953 – The first U.S. experimental 3D television broadcast showed an episode of Space Patrol on Los Angeles ABC affiliate KECA-TV.
1965 – Pakistan's Space and Upper Atmosphere Research Commission (SUPARCO) successfully launches its seventh rocket in its Rehber series.
1967 – After refusing induction into the United States Army the day before (citing religious reasons), Muhammad Ali is stripped of his boxing title.
1968 – The controversial musical Hair, a product of the hippie counter-culture and sexual revolution of the 1960s, opens at the Biltmore Theatre on Broadway, with its song becoming anthems of the anti-Vietnam War movement.
1970 – Vietnam War: United States and South Vietnamese forces invade Cambodia to hunt Viet Cong.
1974 – Watergate Scandal: President Richard Nixon announces the release of edited transcripts of White House tape recordings relating to the scandal.
1975 – Vietnam War: Operation Frequent Wind: The U.S. begins to evacuate U.S. citizens from Saigon prior to an expected North Vietnamese takeover. U.S. involvement in the war comes to an end.
1975 – Vietnam War: The North Vietnamese Army completes its capture of all parts of South Vietnamese-held Trường Sa Islands.
1986 – A fire at the Central library of the City of Los Angeles Public Library damages or destroys 400,000 books and other items.
1986 – The Chernobyl Disaster: American and European Spy Satellites capture the ruins of the 4th Reactor at the Chernobyl Power Plant
1991 – A cyclone strikes the Chittagong district of southeastern Bangladesh with winds of around 155 miles per hour (249 km/h), killing at least 138,000 people and leaving as many as 10 million homeless.
1992 – Los Angeles riots: Riots in Los Angeles, California, following the acquittal of police officers charged with excessive force in the beating of Rodney King. Over the next three days 53 people are killed and hundreds of buildings are destroyed.
1997 – The Chemical Weapons Convention of 1993 enters into force, outlawing the production, stockpiling and use of chemical weapons by its signatories.
1999 – The Avala TV Tower near Belgrade is destroyed in the NATO bombing of Yugoslavia.
2004 – Dick Cheney and George W. Bush testify before the 9/11 Commission in a closed, unrecorded hearing in the Oval Office.
2004 – Oldsmobile builds its final car ending 107 years of production.
2005 – Syria completes withdrawal from Lebanon, ending 29 years of occupation.
2011 – The Wedding of Prince William, Duke of Cambridge and Kate Middleton.
2013 – A powerful explosion occurs in an office building in Prague, Czech Republic, believed to have been caused by natural gas, injures 43 people.