Battle of Almenar
1082 CE.
Shown on the map at 41.799°, 0.569°.
The battle of Almenar was fought in the spring or summer of 1082 between the taifa kingdom of Zaragoza and the taifa kingdom of Lleida. The Zaragozan army under El Cid defeated the Lleidan army and its Catalan allies, thus relieving a siege of Almenar. Count Berenguer Ramon II of Barcelona was taken captive, but was soon released.
Text from the Wikipedia article Battle of Almenar (1082), licensed CC BY-SA 4.0.