Battle of Rieti
1821 CE.
Shown on the map at 42.400°, 12.867°.
The Battle of Antrodoco (Rieti) was fought on 7 March 1821 between Austria and Neapolitan rebels. The Austrians were victorious. The rebel Neapolitan general Guglielmo Pepe commanded a force numbering 10,000 soldiers, whilst the Austrian general Johann Frimont commanded an army of around 14,500 soldiers.
Text from the Wikipedia article Battle of Rieti, licensed CC BY-SA 4.0.