Battle of Achir
1016 CE.
Shown on the map at 35.938°, 3.240°.
The Battle of Achir was fought in June 1016 between the Zirid army of Al-Mu'izz, the Emir of ifriqiya, and the Hammadid army under the Hammadid Emir Hammad ibn Buluggin, this battle was part of the zirid-hammadid war which resulted in the splitting of the previous Zirid domains into two independent emirates. It took place near the medieval city of Achir located in the south of the city of Algiers, and was a decisive Hammadid victory.
Text from the Wikipedia article Battle of Achir (1016), licensed CC BY-SA 4.0.