on this day, 14 engagements
Battles fought on 1 January
14 engagements in the atlas were fought on 1 January between 1227 and 1951: 10 battles, 3 sieges and 1 naval action.
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 1 January 1227 | Battle of Muhu | Muhu | |
| 1 January 1472 | Sitio de Barcelona (1472) | Barcelona | Catalan Civil War |
| 1 January 1558 | Siege of Calais | Calais | Anglo-French War of 1557–1559 |
| 1 January 1586 | Battle of Santo Domingo | Santo Domingo | Anglo-Spanish War |
| 1 January 1709 | Battle of St. John's | St. John's | Queen Anne's War |
| 1 January 1716 | Siege of Kajaani Castle | Kajaani Castle | |
| 1 January 1800 | Action of 1 January 1800 | Gonâve Island | War of the South |
| 1 January 1809 | Battle of Castellón | Castelló d'Empúries | Peninsular War |
| 1 January 1813 | Siege of Lankaran | Qajar Iran | Russo-Persian War of 1804–13 |
| 1 January 1818 | Battle of Koregaon | Koregaon | Third Anglo-Maratha War |
| 1 January 1860 | Battle of Castillejos | Fnideq | Hispano-Moroccan War |
| 1 January 1863 | Battle of Galveston | Galveston, Texas | American Civil War |
| 1 January 1940 | Battle of Raate Road | Raatteentie | Winter War |
| 1 January 1951 | Battle of Uijeongbu | Uijeongbu | Korean War |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.