| | 1763 | Battle of Gherain. British defeat Nawab of Bengal in four hour battle. |
| | 1801 | Battle of Copenhagen. Ordered to withdraw, Nelson held his telescope to his blind eye and continued to fight. |
| | 1836 | Battle of San Jacinto River. Santa Anna was taken prisoner and forced to recognize the independence of Texas. |
| | 1935 | Watson Watt granted a patent for RADAR. |
| | 1982 | Argentines attack the Falkland Islands. |