Battle of Rocheserviere
1815 CE.
Shown on the map at 46.940°, -1.508°.
The Battle of Rocheserviere was fought at Rocheservière on the 20 June 1815, between Vendéan Royalists, who had remained loyal to King Louis XVIII during the Hundred Days, and Napoleon's Army of the West, commanded by General Jean Maximilien Lamarque. The battle ended with the defeat of the Royalist forces. Five days later the Treaty of Cholet was signed, ending the hostilities.
Text from the Wikipedia article Battle of Rocheserviere, licensed CC BY-SA 4.0.