| 0 | | Feast of St. Philip of Agira, Patron of the United States Army Special Forces, and that of St. Dominic de la Calzada, Patron of Civil Engineers |
| 254 | | Election of Pope Stephan I (254-257), later canonized |
| 1082 | | Battle of Mailberg: Vratislav II of Bohemia defeats Leopold II of Austria |
| 1167 | | Battle of Monte Porzio: Frederick Barbarossa defeats the forces of Pope Alexander III |
| 1264 | | Three day battle of Lewes begins: Earl Simon de Montfort of Leicester defeats & captures King Henry III of England |
| 1328 | | Pietro Rainalducci becomes anti-Pope as "Nicholas V" (1328-30) |
| 1607 | | English settlers establised Jamestown, Virginia |
| 1629 | | The Piedmontese capture Trino from the Mantuans |
| 1649 | | Naval Battle of Focchies: Venetians defeat the Turks |
| 1780 | | British capture Charleston |
| 1795 | | Battle of Nu'uanu: Kamehameha unifies Hawaii [Est] |
| 1797 | | Mutiny in the British Fleet at the Nore (subdued June 16) |
| 1815 | | Austrians overwhelm the Neapolitan 12th Regt, north of Itri |
| 1863 | | Battle of Raymond, Miss |
| 1864 | | Atlanta Campaign: Widespread skirmishing around Dalton |
| 1879 | | War of the Pacific - Battle of Iquiqui: The Chilean Navy defeats the Peruvians |
| 1881 | | Treaty of Bardo: Tunis becomes a French protectorate |
| 1885 | | Battle of Batoche: French Canadians rebel against Canada |
| 1888 | | Brazil abolishes slavery, the last western nation to do so |
| 1898 | | US forces land at Cabañas & Punta Arbolitas, Cuba |
| 1898 | | US Navy bombards San Juan, P.R. |
| 1917 | | Tenth Battle of the Isonzo begins (to May 28) |
| 1926 | | Umberto Nobile's airship 'Norge' flies over the North Pole |
| 1937 | | George VI crowned King of England |
| 1940 | | French occupy St Maarten, Netherlands West Indies |
| 1940 | | Germans force a crossing of the Meuse River near Sedan |
| 1943 | | Solomons: USN shells Vila and Munda, mines Kula Gulf |
| 1943 | | Roosevelt and Churchill met in Washington for the Trident Conference -- Learn More |
| 1945 | | Okinawa: major Kamikaze attack, BB 'New Mexico' (BB-40) badly hit. |
| 1951 | | the first H-Bomb was tested, at Eniwetok Atoll |
| 1975 | | US merchant ship 'Mayaguez' seized by Cambodian forces |
| 1496 | | Gustavus Eriksson Vasa -- King Gustav I of Sweden (1523-1560), founder of the Vasa Dynasty |
| 1590 | | Grand Duke Cosimo II de' Medici of Tuscany (1609- 1621), patron of Galileo |
| 1670 | | Elector Augustus I of Saxony, who was also King Augustus II of Poland and Lithuania, known as “The Strong”, with c. 350 children, including French marshal Saxe -- Learn More |
| 1725 | | Jacques de Mercoyrol de Beaulieu, later Captain, Regiment de Picardie, Brig. Gen., d. 1817 -- Learn More |
| 1729 | | Michael von Melas, Austrian field marshal, the French Wars, d. 1806 |
| 1767 | | Manuel Godoy y Álvarez de Faria, inept Prime Minister of Spain (1792-1797, 1801-1808), d. 1851 |
| 1789 | | The Society of St. Tammany, formed in New York City by Revolutionary War veterans |
| 1806 | | Amos Beebe Eaton, Brig Gen, U.S., d. 1877 |
| 1812 | | Louis Blenker, Brig Gen, U.S., in 1863 |
| 1820 | | Florence Nightingale, "The Lady with the Lamp," d. 1910 |
| 1890 | | Kurt Arthur Benno Student, airborne pioneer, Generaloberst, war criminal, d. 1978 -- Learn More |
| 1894 | | Lt. Gen. Clemente Primieri, Italian soldier, commander, "Gruppo di Combattimento Cremona", Liberation of Italy, 1943-1945 |
| 1900 | | Joseph John Rochefort, U.S. naval officer, cryptanalyst. who broke the Japanese code, d. 1976 |
| 1003 | | Pope Sylvester II - Gerbert of Aurillac (999-1003), c. 57, first French pope |
| 1012 | | Pope Sergius IV - Pietro "Bucca Porci" (1009-1012) |
| 1182 | | King Valdemar I "the Great" of Denmark (1146-1182), 51 |
| 1382 | | Giovanna I Queen Regnant of Naples, having runthrough five husbands and numerous lovers while ruining her country, murdered at 56 |
| 1641 | | Thomas Wentworth, 1st Earl of Strafford, 48, executed by Bill of Attainder |
| 1796 | | The Most Serene Republic of Venice, murdered at 820 by Napoleon Bonaparte |
| 1847 | | Jérôme Napoléon Charles Bonaparte, nephew of Napoleon, who might have been King of the UK, at 32 -- Learn More |
| 1863 | | King Radama II of Madagascar (1861-1863), assassinated at 23 for opening the country to Christianity |
| 1864 | | J.E.B. Stuart, 31, Confederate cavalryman, d/w from Yellow Tavern, 11th |
| 1923 | | Lt. Col. Earl "Pete" Ellis, USMC, 42, probably from drink, while travelling incognito in the Caroline Is. |
| 1935 | | Marshal Joseph Pilsudski, founder of modern Poland, at 67 |
| 1941 | | Charles Henry George Howard, the Earl of Suffolk, his secretary Eileen Beryl Morden, his chauffeur Fred Hards, and five assistants, defusing a bomb -- Learn More |
| 1944 | | Max Brand [Frederick Schiller Faust], pulp western author, war correspondent with the US 351st Infantry, kia at 51 near Itri, northwest of Naples |
| 1957 | | Erich von Stroheim, 71, actor ("The Grand Illusion") |