Agrippa was again called away to take command of the fleet when the war with Antony and Cleopatra broke out. He captured the strategically important city of Methone at the southwest of the Peloponnese, then sailed north, raiding the Greek coast and capturing Corcyra (modern Corfu). Octavian then brought his forces to Corcyra, occupying it as a naval base. Antony drew up his ships and troops at Actium, where Octavian moved to meet him. Agrippa meanwhile defeated Antony's supporter Quintus Nasidius in a naval battle at Patrae. Dio relates that as Agrippa moved to join Octavian near Actium, he encountered Gaius Sosius, one of Antony's lieutenants, who was making a surprise attack on the squadron of Lucius Tarius, a supporter of Octavian. Agrippa's unexpected arrival turned the battle around.