Seleukid

Suppressio Veri and the Battle of Magnesia

Relief of jumbled infantry and horsemen in Greek clothing fighting each other
A detail of a battle on a marble Attic sarcophagus of the early third century CE. State Hermitage Museum, St. Petersburg, inventory number A.521. Photo by Sean Manning, September 2015.

A few weeks ago I was distracting myself by chatting about the Battle of Magnesia with Michael Park, a very thoughtful lover of ancient history. This battle was a shocking upset where the Seleukid king and and army raised from his whole kingdom were scattered by a small army from Rome and Pergamon which had not seemed very eager for the fight. The longest surviving accounts are by Livy (written about 150 years after the fact) and Appian of Alexandria (about 300 years later) both of whom had access to contemporary sources. This campaign is interesting to me because Antiochus’ enemies trotted out some 300-year-old tropes from the Persian wars to depict him as an Asiatic despot seeking to enslave Europe with his countless but feckless soldiers. However, they were limited by the fact that Antiochus and his Friends paid people to tell their story in fashionable Greek, so they could not claim that Antiochus had hundreds of thousands of soldiers or wore foreign clothing or was too cowardly to go into battle himself. If they went too far, people who had heard other versions after dinner or read them in a library would cry foul.

In this battle the fighting began on the wings, and each side won on its right: Antiochus and his Friends drove a legion back to its camp with the first charge, while panic broke out on his left wing and Eumenes of Pergamon found himself in control of the field there. The infantry on both sides had not yet engaged: perhaps Antiochus was nervous of the stories that while thyreophoroi were normally no danger to a Macedonian phalanx, the Roman ones had a way of getting into the small gaps which emerged if a phalanx tried to move too quickly or crossed rough ground. Livy gives us his version of what happened next:

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