on this day, 24 engagements
Battles fought on 3 October
24 engagements in the atlas were fought on 3 October between 42 BC and 1951: 19 battles, 3 sieges and 2 naval actions. Among them: Battle of Philippi (42 BC).
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 3 October 42 BC | Battle of Philippi | Philippi | Liberators' Civil War |
| 3 October 1356 | Siege of Rennes | Rennes | War of the Breton Succession |
| 3 October 1569 | Battle of Moncontour | Moncontour | French Wars of Religion |
| 3 October 1574 | Siege of Leiden | Leiden | Eighty Years' War |
| 3 October 1594 | Battle of Glenlivet | ||
| 3 October 1602 | Battle of the Narrow Seas | Strait of Dover | Eighty Years' War |
| 3 October 1624 | Action of 3 October 1624 | San Pietro Island | Spanish–Algerian conflicts |
| 3 October 1655 | Battle of Wojnicz | Wojnicz | Deluge |
| 3 October 1700 | Battle of Jouami' al-Ulama | Sétif | Tunisian-Algerian War of 1700 |
| 3 October 1758 | Siege of Kolberg | Kołobrzeg | Seven Years' War |
| 3 October 1781 | Battle of Fort Slongo | Fort Salonga, New York | American Revolutionary War |
| 3 October 1795 | Battle of Mortagne | Mortagne-sur-Sèvre | War in the Vendée |
| 3 October 1809 | Battle of Hallein | Hallein | |
| 3 October 1816 | Battle of San Borja | São Borja | Portuguese Conquest of the Banda Oriental |
| 3 October 1836 | Battle of Fanfa | Fanfa Island | Farroupilha Revolution |
| 3 October 1854 | Battle of the Diablo Mountains | Texas | Jicarilla War |
| 3 October 1861 | Battle of Greenbrier River | Pocahontas County, West Virginia | American Civil War |
| 3 October 1862 | Second Battle of Corinth | Corinth, Mississippi | American Civil War |
| 3 October 1866 | Battle of Miahuatlán | Miahuatlán de Porfirio Díaz Municipality | Second French intervention in Mexico |
| 3 October 1912 | Battle of Coyotepe Hill | Masaya | Banana Wars |
| 3 October 1917 | Battle of Polygon Wood | Polygon Wood, Zonnebeke | World War I |
| 3 October 1918 | Battle of Blanc Mont Ridge | Champagne-Ardenne | World War I |
| 3 October 1943 | Battle of Kos | Kos | World War II |
| 3 October 1951 | Battle of Nghia Lo | Tonkin | First Indochina War |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.