Battle of Marvão
1762 CE.
Shown on the map at 39.395°, -7.377°.
The Battle of Marvão was a military action that took place during the Fantastic War and the Anglo-Spanish War and was part of the attempted Spanish and French invasion of Portugal in late 1762. A sizeable Spanish force attacked the castle town of Marvão but was repelled and defeated by an Anglo-Portuguese force under the command of Captain Thomas Browne.
Text from the Wikipedia article Battle of Marvão, licensed CC BY-SA 4.0.