Arrangement of the Hostile Armies. Having spoken thus, he sent Parmenio to command upon the left wing, while he led in person on the right. And at the head of the right wing he placed the following officers:—Philotas, son of Parmenio, with the cavalry Companions, the archers, and the Agrianian javelin-men; and Amyntas, son of Arrhabaeus, with the cavalry carrying the long pike, the Paeonians, and the squadron of Socrates, was posted near Philotas. Close to these were posted the Companions who were shield-bearing infantry under the command of Nicanor, son of Parmenio. Next to these the brigade of Perdiccas, son of Orontes, then that of Coenus, son of Polemocrates; then that of Craterus,124 son of Alexander, and that of Amyntas, son of Andromenes; finally, the men commanded by Philip, son of Amyntas. The first on the left wing were the Thes44salian cavalry, commanded by Calas, son of Harpalus;125 next to these, the cavalry of the Grecian allies, commanded by Philip, son of Menelaüs;126 next to these the Thracians, commanded by Agatho.127 Close to these were the infantry, the brigades of Craterus, Meleager, and Philip, reaching as far as the centre of the entire line.
The Persian cavalry were about 20,000 in number, and their infantry, consisting of Grecian mercenaries, fell a little short of the same number.128 They had extended their horse along the bank of the river in a long phalanx, and had posted the infantry behind the cavalr............