on this day, 26 engagements
Battles fought on 23 September
26 engagements in the atlas were fought on 23 September between 1325 and 1942: 16 battles, 7 sieges and 3 naval actions. Among them: Battle of Dakar (1940), Battle of Blore Heath (1459).
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 23 September 1325 | Battle of Altopascio | Altopascio | Gregorian Reform |
| 23 September 1338 | Battle of Arnemuiden | Arnemuiden | Hundred Years' War |
| 23 September 1408 | Battle of Othée | Othée | |
| 23 September 1438 | Battle of Sellnitz | Želenice | Hussite Wars |
| 23 September 1459 | Battle of Blore Heath | Blore Heath | Wars of the Roses |
| 23 September 1532 | Siege of Yamashina Hongan-ji | Yamashina Hongan-ji | Kyoroku Astronomical Rebellion |
| 23 September 1568 | Battle of San Juan de Ulúa | Castle of San Juan de Ulúa | |
| 23 September 1588 | Siege of Bergen-op-Zoom | Bergen op Zoom | Eighty Years' War |
| 23 September 1597 | Siege of Namwon | Namwon-eupseong Fortress | Japanese invasions of Korea |
| 23 September 1640 | Siege of Ille-sur-Têt | Ille-sur-Têt | Reapers' War |
| 23 September 1642 | Battle of Powick Bridge | Worcester | First English Civil War |
| 23 September 1687 | Siege of the Acropolis | Acropolis of Athens | Morean War |
| 23 September 1751 | Siege of Arcot | Arcot | Second Carnatic War |
| 23 September 1771 | Battle of Stołowicze | Stalovičy | list of armed conflicts involving Poland against Russia |
| 23 September 1779 | Battle of Flamborough Head | North Sea | American Revolutionary War |
| 23 September 1798 | Battle of Killala | Killala | Irish Rebellion of 1798 |
| 23 September 1803 | Battle of Assaye | Assaye | Second Anglo-Maratha War |
| 23 September 1821 | Siege of Tripolitsa | Tripoli | Greek War of Independence |
| 23 September 1862 | Battle of Wood Lake | Yellow Medicine County, Minnesota | Dakota War of 1862 |
| 23 September 1864 | Battle of Sulphur Creek Trestle | Limestone County, Alabama | |
| 23 September 1916 | Battle of Mount Csindrel | ||
| 23 September 1918 | Battle of Haifa | Haifa | World War I |
| 23 September 1939 | Battle of Krasnobród | Krasnobród | World War II |
| 23 September 1939 | Skirmish near Kalety | World War II | |
| 23 September 1940 | Battle of Dakar | Dakar | World War II |
| 23 September 1942 | Actions along the Matanikau | Guadalcanal | Pacific War |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.