Second Battle of Noirmoutier
1793 CE.
Shown on the map at 46.967°, -2.217°.
The First Battle of Noirmoutier took place on 12 October 1793 as part of the war in the Vendée. The Vendéens under François de Charette were victorious over the republican troops stationed there.
Text from the Wikipedia article First Battle of Noirmoutier, licensed CC BY-SA 4.0.