He made the longest address that day to the Thessalians and other Greeks, who answered him with loud shouts desiring him to lead them on against the barbarians, upon which he shifted his javelin into his left hand, and with his right lifted up towards heaven, besought the gods, as Callisthenes tells us, that if he was of a truth the son of Jupiter, they would be pleased to assist and strengthen the Grecians. At the same time the augur Aristander, who had a white mantle about him, and a crown of gold on his head, rode by and showed them an eagle that soared just over Alexander, and directed his flight towards the enemy; which so animated the beholders, that after mutual encouragements and exhortations, the cavalry charged at full speed, and were followed in a mass by the whole phalanx of the foot. But before they could well come to blows with the first ranks, the barbarians shrunk back, and were hotly pursued by Alexander, who drove those that fled before him into the middle of the battle, where Darius himself was in person, whom he saw from a distance over the foremost ranks, conspicuous in the midst of his lifeguard, a tall and fine-looking man, drawn in a lofty chariot, defended by an abundance of the best cavalry who stood close in order about it, ready to receive the enemy. But Alexander's approach was so terrible, forcing those who gave back upon those who yet maintained their ground, that he beat down and dispersed them almost all. Only a few of the bravest and valiantest opposed the pursuit, who were slain in their king's presence, falling in heaps upon one another, and in the very pangs of death striving to catch hold of the horses. Darius now seeing all was lost, that those who were placed in front to defend him were broken and beaten back upon him, that he could not turn or disengage his chariot without great difficulty, the wheels being clogged and entangled among the dead bodies, which lay in such heaps as not only stopped, but almost covered the horses, and made them rear and grow so unruly, that the frighted charioteer could govern them no longer, in this extremity was glad to quit his chariot and his arms, and mounting, it is said, upon a mare that had been taken from her foal, betook himself to flight. This battle being thus over, seemed to put a period to the Persian empire; and Alexander, who was now proclaimed king of Asia, returned thanks to the gods in magnificent sacrifices, and rewarded his friends and followers with great sums of money, and places, and governments of provinces.