Battle of Albarracín
1937 CE.
Shown on the map at 40.405°, -1.444°.
The Battle of Albarracín took place in Albarracín and surrounding areas (Teruel) between 5 July and 11 August 1937, during the Spanish Civil War.
Text from the Wikipedia article Battle of Albarracín, licensed CC BY-SA 4.0.