 He therefore adapted his own formation to the Roman model, deploying light mobile detachments alongside the phalanx'.Philopoemen too used this tactic at Mantinea in 207 BC, making his phalanx more flexible.Much is made of Polybius' description of 5,000 Seleucid infantryman in 166 BC armed in the 'Roman' fashion at a parade at Daphne.