men, hardy, skilful, bold, and trained to a life of constant activity and warfare. It is not uninteresting to notice that the ancestors of our own late enemies the Sikhs, served as allies of Darius against the Macedonians. They are spoken of in Arrian as Indians who dwelt near Bactria. They were attached to the troops of that satrapy, and their cavalry was one of the most formidable forces in the whole Persian army.
Besides these picked troops contingents also came in from the numerous other provinces that yet obeyed the Great King. Altogether, the horse are said to have been forty thousand, the scythe-bearing chariots two hundred, and the armed elephants fifteen in number. The amount of the infantry is uncertain; but the knowledge which both ancient and modern times supply of the usual character of oriental armies, and of their populations of camp-followers, may warrant us in believing that many myriads were prepared to fight, or to encumber those who fought for the last Darius.
The position of the Persian king near Mesopotamia was chosen with great military skill. It was certain that Alexander on his return from Egypt must march northward along the Syrian coast, before he attacked the central provinces of the Persian empire. A direct eastward march from
