The siege of Oricum occurred during the Civil War in 48 BC, when Caesar approached the city of Oricum in Illyricum with an armed force, and the Pompeian commander, Lucius Manlius Torquatus, surrendered without a fight. After Caesar departed for Dyrrhachium with most of his army, Gnaeus Pompeius the younger attacked Oricum with his fleet, and overcoming the harbour defenses prepared by Marcus Acilius Caninus, took the city by storm.