on this day, 33 engagements
Battles fought on 3 September
33 engagements in the atlas were fought on 3 September between 36 BC and 1939: 26 battles, 5 sieges and 2 naval actions. Among them: Battle of Ain Jalut (1260), Battle of Worcester (1651).
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 3 September 36 BC | Battle of Naulochus | Naulochus | Wars of Augustus |
| 3 September 1041 | Battle of Montepeloso | Irsina | Norman conquest of southern Italy |
| 3 September 1260 | Battle of Ain Jalut | Well of Harod | Mongol invasions of the Levant |
| 3 September 1367 | Battle of Dinklar | Schellerten | |
| 3 September 1421 | Siege of Cadaň | Kadaň | Hussite Wars |
| 3 September 1427 | Battle of Marchenoir | Marchenoir | |
| 3 September 1448 | Siege of Prague | Prague | |
| 3 September 1463 | Siege of Corinth | Corinth | First Ottoman–Venetian War |
| 3 September 1632 | Battle of Fürth | Fürth | Thirty Years' War |
| 3 September 1643 | Battle of Cartagena | Cartagena | Franco-Spanish War |
| 3 September 1649 | Siege of Drogheda | Drogheda | Irish Confederate Wars |
| 3 September 1650 | Battle of Dunbar | Dunbar | Wars of the Three Kingdoms |
| 3 September 1651 | Battle of Worcester | Worcester | Wars of the Three Kingdoms |
| 3 September 1690 | Battle of Ulan Butung | Hexigten Banner | Dzungar–Qing Wars |
| 3 September 1750 | Battle at Chignecto | Isthmus of Chignecto | Father Le Loutre's War |
| 3 September 1755 | Battle of Petitcodiac | Seven Years' War | |
| 3 September 1777 | Battle of Cooch's Bridge | Newark, Delaware | American Revolutionary War |
| 3 September 1796 | Battle of Würzburg | Würzburg | War of the First Coalition |
| 3 September 1814 | Battle of Hampden | Hampden, Maine | War of 1812 |
| 3 September 1855 | Battle of Ash Hollow | Ash Hollow State Historical Park, Nebraska | Sioux Wars |
| 3 September 1862 | Battle of Acton | Acton, Minnesota | Dakota War of 1862 |
| 3 September 1863 | Battle of Whitestone Hill | Dakota Territory, North Dakota | Sioux Wars |
| 3 September 1863 | Battle of Panasówka | Panasówka | January Uprising |
| 3 September 1863 | Battle of Strzelcowizną | Strzelcowizna | January Uprising |
| 3 September 1879 | Siege of the British Residency in Kabul | Kabul | Second Anglo-Afghan War |
| 3 September 1907 | Battle of Sidi Moumen | Sidi Moumen | Spanish–Moroccan conflicts |
| 3 September 1916 | Battle of Delville Wood | Longueval | World War I |
| 3 September 1916 | Battle of Pozières | Pozières | World War I |
| 3 September 1916 | Battle of Guillemont | Guillemont | World War I |
| 3 September 1917 | Battle of Mărășești | Mărășești | World War I |
| 3 September 1936 | Battle of Talavera de la Reina | Talavera de la Reina | Spanish Civil War |
| 3 September 1939 | Defense of Katowice | Katowice | World War II |
| 3 September 1939 | Battle of Bukowiec |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.