Battle of Pharsalus
In 48 BC, Cassius sailed his ships to Sicily, where he attacked and burned a large part of Caesar's navy. He then proceeded to harass ships off the Italian coast. News of Pompey's defeat at the Battle of Pharsalus caused Cassius to head for the Hellespont, with hopes of allying with the king of Pontus, Pharnaces II. Cassius was overtaken by Caesar en route, and was forced to surrender unconditionally.