Siege of Syracuse
868 CE.
Shown on the map at 37.069°, 15.287°.
The Battle of Syracuse was a military engagement between the Aghlabids and the Byzantines near Syracuse. The Byzantines launched an expedition to re-establish their control over Sicily. The expedition ended in disaster for the Byzantines.
Text from the Wikipedia article Battle of Syracuse (868), licensed CC BY-SA 4.0.