Kingdom of Commagene
Paetus invaded the Kingdom of Commagene, as head of the Legio VI Ferrata. The client Kings Aristobulus of Chalcis and Sohaemus of Emesa also supplied troops to Paetus. They all arrived the night before the battle. As Epiphanes and Callinicus prepared themselves that night for war, Antiochus IV was preparing to flee to Cilicia.