The rest being backward, Aristides undertook the enterprise for the Athenians, and sent Olympiodorus, the most valiant of his inferior officers, with three hundred chosen men and some archers under his command. These were soon in readiness, and running upon the enemy, as soon as it was perceived by Masistius, who commanded the cavalry of the barbarians, a man of wonderful courage and of extraordinary bulk and comeliness of person, he turned his steed and made towards them. They sustained the shock and joined battle with him, as though by this encounter they were to try the success of the whole war. But after Masistius's horse received a wound, and flung him, and he falling, could hardly raise himself through the weight of his armor, the Athenians pressed upon him with blows, but could not easily get at his person, armed as he was, breast, head, and limbs all over, with gold and brass and iron;but one of them at last, running a javelin under the visor of his helmet, slew him; and the rest of the Persians, leaving the body, fled. The greatness of the Greek success was known, not by the multitude of the slain, (for an inconsiderable number were killed), but by the sorrow the barbarians expressed. For they shaved themselves, their horses, and mules for the death of Masistius, and filled the plain with howling and lamentation;having lost a person, who, next to Mardonius himself, was by far the chief among them, both for valor and authority.
After this skirmish of the horse, they kept from fighting a long time; for the soothsayers, by the sacrifices, foretold the victory both to Greeks and Persians, if they stood upon the defensive part only, but if they became aggressors, the contrary. At length Mardonious, when he had but a few days' provision, and the Greek forces were increasing continually, impatient of delay, determined to lie still no longer, but passing Asopus by daybreak, to fall unexpectedly upon the Greeks. This he signified the night before to the captains of his host. But about midnight, a certain horseman stole into the Greek camp, and coming to the watch, desired them to summon Aristides, the Athenian, to him. He came speedily, and the stranger said: "I am Alexander, king of the Macedonians, and have come here through the greatest danger in the world for the goodwill I bear you, lest a sudden onset should dismay you, so as to behave in the fight worse than usual. For to-morrow Mardonius will give you battle, urged, not by any hope of success or courage, but by want of victuals: for the prophets prohibit him from the battle, the sacrifices and oracles being unfavorable; but the army is in despondency and consternation; and necessity forces him to try his fortune, or sit still and endure the last extremity of want." Alexander, thus saying, entreated Aristides to take notice and remember him, but not tell any other.
But he replied that it was not fair conceal to the matter from Pausanias (because he was general); as for any others he would keep it secret from them till the battle was fought; but if the Greeks obtained the victory, that then no one should be ignorant of Alexander's goodwill and kindness towards them. After this, the king of the Macedonians rode back again, and Aristides went to Pausanias's tent and told him; and they sent for the rest of the captains and gave orders that the army should be in battle array.
Meantime, day came upon them; and Mardonious having his army in array, fell upon the Lacedaemonians with great shouting and noise of barbarous people, as if they were not about to join battle, but crush the Greeks in their flight- a thing which very nearly came to pass. For Pausanius, perceiving what was done, made a halt, and commanded every one to put themselves in order for the battle; but through the disturbance he was in, on account of the sudden approach of the enemy, he forgot to give the signal to the Greeks in general. Whence it was, that they did not come immediately, or in a body, to their assistance, but by small companies and straggling, when the fight was already begun. Pausanias, offering sacrifice, could not procure favorable omens, and so commanded the Lacedaemonians to set down their shields at their feet and wait quietly await for his directions, making no resistance to any of their enemies. At this time, Callicrates, who, we are told, was the most comely man in the army, being shot with an arrow and upon the point of expiring, said that he did not lament his death (for he came from home to lay down his life in defense of Greece) but that he died without action. While Pausanias was thus in the act of supplication, the sacrifices appeared propitious, and the soothsayers foretold victory. The word being given, the Lacedaemonian battalion of foot seemed, on the sudden, like some fierce animal, setting up his bristles, and betaking himself to the combat; and the barbarians perceived that they encountered with men who would fight to the death. Therefore, holding their wicker shields before them, they shot their arrows amongst the Lacedaemonians. But they, keeping together in the order of a phalanx, and falling upon their enemies forced their shields out of their hands, and, striking with their pikes at the breasts and faces of the Persians, overthrew many of them; they, however, fell neither unrevenged nor without courage. For taking hold of the spears with their bare hands, they broke many of them, and betook themselves with effect to the sword; and making use of their falchions and scimitars, and wresting the Lacedaemonians' shields from them, and grappling with them, for a long time stood their ground.