(M447) The total number of Lacedæmonians, Corinthians, Athenians, and other Greeks, assembled to meet the Persian army, B.C. 479, was thirty-eight thousand seven hundred men, heavily armed, and seventy-one thousand three hundred light armed, without defensive armor; but most of these were simply in attendance on the hoplites. The Persians, about three hundred thousand in number, occupied the line of the river Asopus, on a plain; the Greeks stationed themselves on the mountain declivity near Erythæ. The Persian cavalry charged, to dislodge the Greeks, unwilling to contend on the plain; but the ground was unfavorable for cavalry operations, and after a brief success, was driven back, while the general, Masistias, who commanded it, was slain. His death, and the repulse of the cavalry, so much encouraged Pausanias, the Spartan general, that he quitted his ground on the mountain declivity, and took position on the plain beneath. The Lacedæmonians composed the right wing; the Athenians, the left; and various other allies, the centre. Mardonius then slightly changed his position, crossing the Asopus, nearer his own camp, and took post on the left wing, opposite the right wing of the Greeks, commanded by Pausanias. Both armies then offered sacrifices to the gods, but Mardonius was able to give constant annoyance to the Greeks by his cavalry, and the Thebans gave great assistance. Ten days were thus spent by the two armies, without coming into general action, until Mardonius, on becoming impatient, against the advice of Artabazus, second in command, resolved to commence the attack. The Greeks were forewarned of his intention, by Alexander of Macedon, who came secretly to the Greek camp at night—a proof that he, as well as others, were impatient of the Persian yoke. The Lacedæmonians, posted in the right wing, against the Persians, changed places with the Athenians, who were more accustomed to Persian warfare; but this manœuvre being detected, Mardonius made a corresponding change in his own army—upon which Pausanias led back again his troops to the right wing, and a second movement of Mardonius placed the armies in the original position.