Anabasis (1.8.20-1.8.24)

As for the enemy’s chariots, some of them plunged through the lines of their own troops, others, however, through the Greek lines, but without charioteers. And whenever the Greeks saw them coming, they would open a gap for their passage; one fellow, to be sure, was caught, like a befuddled man on a race-course, yet it was said that even he was not hurt in the least, nor, for that matter, did any other single man among the Greeks get any hurt whatever in this battle, save that some one on the left wing was reported to have been hit by an arrow.

in fact, all the generals of the barbarians hold their own centre when they are in command, for they think that this is the safest position, namely, with their forces on either side of them, and also that if they want to pass along an order, the army will get it in half the time;

so in this instance the King held the centre of the army under his command, but still he found himself beyond the left wing of Cyrus. Since, then, there was no one in his front to give battle to him or to the troops drawn up before him, he proceeded to wheel round his line with the intention of encircling the enemy.