Battles on 21 September
14 battles fought (or begun) on 21 September, from 1689 to 2014, in date order. Dates are from Wikidata and are shown only for battles from 1600 onwards with a single exact date. Dates recorded in the Julian (Old Style) calendar are listed under their Julian day and marked.
Which battles happened on 21 September?
The best-known battles on this day (by number of Wikipedia language editions) are Battle of Karánsebes (1788), Battle of Prestonpans (1745), Battle of Palikao (1860).
- Battle of Brackett's Wood 21 September 1689United States · King William's War
- Battle of Lugos 21 September 1695Romania · Great Turkish War
- Battle of Prestonpans 21 September 1745Scotland · Jacobite risings
- Battle of Wahab's Plantation 21 September 1780United States · American Revolutionary War
- Battle of Karánsebes 21 September 1788Romania · Austro-Turkish War of 1788–1791
- Battle of Montaigu 21 September 1793France · War in the Vendée
- First Battle of Dego 21 September 1794Italy · French Revolutionary Wars
- Battle of the Diamond 21 September 1795Northern Ireland · Armagh disturbances
- Third siege of Szenttamás 21 September 1848Serbia
- Battle of Palikao 21 September 1860China · Second Opium War
- Battle of Ukoko 21 September 1914Gabon · Kamerun campaign
- Battle of Doss Alto 21 September 1918Italy
- Battle of Porkuni 21 September 1944Estonia · World War II
- Battle of Sanaa (2014) 21 September 2014Yemen · Houthi takeover in Yemen