march, discovered to Perseus the design which the Romans had to encompass him: for he, seeing that Æmilius lay still, had not suspected any such attempt. He was startled at the news, yet did not put his army in motion, but sent ten thousand mercenary soldiers and two thousand Macedonians, under command of Milo, with order to hasten and possess themselves of the passes. Polybius relates that the Romans found these men asleep when they attacked them; but Nasica says there was a sharp and severe conflict on the top of the mountain, that he himself encountered a mercenary Thracian, pierced him through with his javelin, and slew him; and that the enemy being forced to retreat, Milo stripped to his coat and fled shamefully without his armor, while he followed without danger, and conveyed the whole army down into the country.
After this event, Perseus, now grown fearful, and fallen from his hopes, removed his camp in all haste; he was under the necessity either to stop before Pydna, and there run the hazard of a battle, or disperse his army into cities, and there expect the event of the war, which, having once made its way into his country, could not be driven out without great slaughter and bloodshed. But Perseus, being told by his friends that he was much superior in number, and that men fighting in the defence of their wives and children must needs feel all the more courage, especially when all was done in the sight of their king, who himself was engaged in equal danger, was thus again encouraged; and, pitching his camp, prepared himself to fight, viewed the country, and gave out the commands, as if he designed to set upon the Romans as soon as they approached. The place was a field fit for the action of a phalanx, which requires smooth standing and even ground, and also had divers little hills, one joining another, fit for the motions whether in retreat or advance of light
