Today in Military History: October 21
Born on this day:
| 1833 | Alfred Bernhard Nobel, created dynamite and Peace Prizes. |
Events of Military significance on this day:
| 1094 | El Cid defeated Muslim forces on the plains of Cuarte. First victory of Christians over Muslims in open battle. |
| 1805 | Battle of Trafalger. Horatio Nelson mortally wounded in one of the most decisive naval battles in history. |
| 1861 | Battle of Balls Bluff during the American Civil War. |
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