Battle of Garcia Hernandez
1812 CE.
Shown on the map at 40.860°, -5.433°.
The Battle of García Hernández was fought on 23 July 1812 during the Peninsular War. In the battle, two cavalry brigades of the British Army's King's German Legion (KGL) under Major-General Eberhardt Otto George von Bock defeated 4,000 French troops led by General Maximilien Sébastien Foy. In what would otherwise have been an unremarkable skirmish, the KGL dragoons achieved the unusual feat of breaking two French squares, those of the 6th, 69th and 76th Line, routing the entire French force with heavy losses.
Text from the Wikipedia article Battle of García Hernández, licensed CC BY-SA 4.0.