At the same time as this land campaign set out, the Roman fleet had left Corcyra under command of Lucius Apustius, rounded Cape Malea, and rendezvoused with King Attalus near Hermione. The combined fleet then launched an assault on the Macedonian military base on the island of Andros and seized it for Pergamon. The fleet was joined by further ships from Issa and Rhodes and headed north to the Chalkidike peninsula where an assault on Cassandreia was a complete failure. They withdrew to northern Euboea, where they besieged and captured Oreus, another key Macedonian naval base. Since it was now autumn and the sailing season was drawing to a close, the contingents of the fleet dispersed back to their home ports.