Siege of Oviedo
1936 CE.
Shown on the map at 43.360°, -5.845°.
The siege of Oviedo was a siege in the Spanish Civil War that lasted from 19 July until 16 October 1936. The town garrison, under the command of Colonel Antonio Aranda Mata, took sides for the Nationalist uprising and held out until relieved by a Nationalist force from Galicia.
Text from the Wikipedia article Siege of Oviedo, licensed CC BY-SA 4.0.