| | 1509 | Spanish storm city of Oran in North Africa. |
| | 1742 | Battle of Chotusitz. Frederick the Great fights Austrians led by Prince Charles of Lorraine to a draw during the War of the Austrian Succession. |
| | 1804 | Lewis & Clark begin their exploration of the Louisiana Purchase |
| | 1863 | Mexicans surrender Puebla to French invaders. |
| | 1900 | British cavalry relieved siege of Mafeking during the Boer Wars. |