"Having robbed Antiochus of any control at sea, the Romans were bent on completing the destruction with a victory on land. Although the king had a large force of 60,000 foot and 12,000 horse he was apprehensive. He withdrew across the river Phrygius [Kum Cay] and established a strongly fortified encampment near Magnesia-ad-Sipylum[Manisa]. The consular army, with a total strength of about 30,000 advanced across the river and encamped about 2 to 3 miles away from the enemy. After several days of inaction in which the king refused to accept any challenge, the consul moved his camp nearer to the enemy and lined up for battle with his left wing against the river. The king accepted the challenge for fear of shame. The action started on the Roman right wing which was opposed by a mixed mass of light cavalry, preceded by scythed chariots and camels. Eumenes II, on the Roman right, took the initiative by sending his slingers and archers against the chariots, creating panic in the horses and disrupting the enemy wing. a charge by his cavalry followed and extended the disorder, which spread to include the whole of the flank. The Roman legions seized the opportunity to make a direct frontal attack on the enemy phalanx, which was in the centre of their line with elephants posted between the sections. In the meantime, Antiochus, who was in command of a large body of elite cavalry on the right wing, had noted that the enemy had thought it unnecessary to post any cavalry on their left, which was covered by the river. He executed the manoeuvre on which he had staked his chances by charging the infantry and outflanking them along the riverside and then driving them back to their camp. In this extended pursuit he threw away any chance of victory by failing to support his phalanx in its hour of need. It was driven back behind the rampart. Attalus who was with his brother Eumenes on the Roman right, saw the situation on the opposite flank along the river. Being at that time unengaged, he charged across the field to the assistance of the camp guard and forced Antiochus back. The king, seeing that his whole army was giving way, fled. His reputed losses were 50,000 infantry and 3,000 cavalry against a loss on the Roman side of 350 men. After this total disaster Antiochus sent envoys to sue for peace."
Livy 37: 37(6)-44(2); Appian, Syrian Wars, 30-36
Bookmarks