Attalus I

Attalus I defeated the Galatians near the Caecus River. This victory ended the Galatian threat to Pergamon and allowed Attalus to assume the title of king, establishing the Attalid dynasty as a major power in Asia Minor.

Attalus I allied with the Roman Republic against Philip V of Macedon during the First Macedonian War. This alliance brought Pergamon into the Roman sphere of influence and secured Roman support against the Seleucid Empire.

Attalus I commanded the Pergamene fleet alongside the Rhodians against Philip V of Macedon at the Battle of Chios. The allied fleet won a costly victory, but Attalus nearly died when his ship was rammed and sank.