Battles on 12 September
21 battles fought (or begun) on 12 September, from 1631 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 12 September?
The best-known battles on this day (by number of Wikipedia language editions) are Battle of Vienna (1683), Battle of Saragarhi (1897), Monastir offensive (1916).
- Battle of Abrolhos 12 September 1631At sea · Dutch invasions of Brazil
- Battle of Stirling (1648) 12 September 1648Scotland · Wars of the Three Kingdoms
- Battle of Vienna 12 September 1683Austria
- Battle of Rio de Janeiro 12 September 1711 – 22 September 1711Brazil · War of the Spanish Succession
- Battle of Avesnes-le-Sec 12 September 1793France · War of the First Coalition
- Battle of Berby 12 September 1808Norway
- Battle of Ordal 12 September 1813 – 13 September 1813Spain · Peninsular War
- Battle of North Point 12 September 1814United States · Battle of Baltimore
- Second Battle of Huachi 12 September 1821Ecuador · Ecuadorian War of Independence
- Battle of Petra 12 September 1829Greece · Greek War of Independence
- Battle of Harpers Ferry 12 September 1862 – 15 September 1862United States · American Civil War
- Battle of Saragarhi 12 September 1897Pakistan
- Battle of Kaymakchalan 12 September 1916 – 30 September 1916Greece · Macedonian Front
- Battle of Malka Nidzhe 12 September 1916 – 14 September 1916Greece · Monastir Offensive
- Monastir offensive 12 September 1916 – 11 December 1916North Macedonia · Macedonian Front
- Battle of Havrincourt 12 September 1918France · Hundred Days Offensive
- Battle of Saint-Mihiel 12 September 1918 – 16 September 1918France · World War I
- Battle of Edson's Ridge 12 September 1942 – 14 September 1942Solomon Islands · Guadalcanal campaign
- Battle of Dompaire 12 September 1944 – 13 September 1944France
- Royan pocket 12 September 1944 – 30 April 1945France · World War II
- Battle of Konduga (2014) 12 September 2014Nigeria · Boko Haram insurgency