Kingdom of Pergamon
Achaeus assumed control of the army
North Taurus Mountains, Anatolia
Achaeus assumed control of the army. Antiochus III the Great then made him governor of Seleucid territories north of the Taurus. Within two years he recovered the lost territories and forced Attalus within the walls of Pergamon. However, he was accused of intending to revolt, and to protect himself he proclaimed himself king.