| 310 | | Consecration of Pope Eusebius (Apr 18-Aug 17, 310 - or 309), later canonized |
| 1483 | | Battle of the Ponte di Crevola: The Milanese defeat the Swiss |
| 1506 | | Pope Julius II lays the first stone of the new St. Peter's Basilica |
| 1644 | | Thousands of Pamunky and allied Indians raid the Virginia Colony, killing c. 500 settlers, initiating the 32-months' long Second Tidewater War, in which the colonists triumph |
| 1676 | | Sudbury, Mass., attacked by Indians |
| 1775 | | Paul Revere, Samuel Prescott, & William Dawes take a little ride |
| 1804 | | President Jefferson welcomes Alexander von Humboldt to the White House, initiating a week long visit punctuated by lengthy philosophical, geographic, and scientific discussions |
| 1861 | | Baltimore mob attacks the 27th Pennsylvania, several injured |
| 1861 | | Col R E Lee may have been offered and refused a major command in the U.S. Army |
| 1861 | | Confederates capture Harpers Ferry arsenal |
| 1862 | | Farragut's fleet bombards Fts Jackson & St. Philip, below New Orleans |
| 1864 | | Battle of Poison Springs, Ark |
| 1912 | | Regia Marina Capt. Enrico Millo leads a nocturnal torpedo boat raid into the Dardanelles. |
| 1923 | | Poland annexes Central Lithuania |
| 1934 | | The U.S. Army stops issuing sabers to the cavalry. |
| 1942 | | Burma: Chinese 55th Div collapses, breaking Allied front |
| 1942 | | Doolittle Raid: 16 B-25Bs off CV Hornet strike Tokyo and other targets |
| 1942 | | World War II edition of "Stars & Stripes" begins publication in England |
| 1945 | | c. 1000 Allied bombers raid Helgoland, in the North Sea, 128 die |
| 1946 | | The League of Nations is officially dissolved |
| 1954 | | Egypt: Nasser seizes power as premier |
| 1956 | | Egypt & Israel agree to a ceasefire |
| 1983 | | Beirut: Suicide bomber attacks the US Embassy, 63 die |
| 359 | | Flavius Gratianus, Roman Emperor (367-383) |
| 1480 | | Lucrezia Borgia, a much maligned woman, d. 1519 |
| 1521 | | François d'Andelot de Coligny, French Protestant general, d. 1569 |
| 1590 | | Sultan Ahmed I (1603-1617) |
| 1797 | | Louis-Adolphe Thiers, statesman, historian ("Histoire de la revolution française"), Head of State of the French Provisional Republic (1871-1873), d. 1877 |
| 1864 | | Richard Harding Davis, intrepid war correspondent, d. 1916 |
| 1927 | | Samuel P. Huntington, political scientist - "The Soldier & the State," "Clash of Civilizations," d. 2008 |
| 680 | | Caliph Muawiyah I (661-680), c. 78, the first Umayyad |
| 1592 | | Troilo Savelli di Polombara, Lord of Poggio Moiano, Aspra, & Montasola, beheaded in the Sant'Angelo at 18. |
| 1689 | | George Jeffreys, British Chief Justice, the ultimate "Hanging Judge", at c. 40 |
| 1690 | | Charles V Leopold (47), titular Duke of Lorraine (1675-1690), Imperial field marshal |
| 1943 | | Adm. Yamamoto Isoruku (59), air ambush in the Solomon Islands. |
| 1945 | | Ernie Pyle, war correspondent, kia at 44, Ie Shima, Okinawa |
