Eumenes

And indeed they were the oldest soldiers of Philip and Alexander, war’s athletes as it were, without a defeat or a fall up to that time, many of them now seventy years old, and not a man younger than sixty. And so, when they charged upon the forces of Antigonus, they shouted: It is against your fathers that ye sin, ye miscreants; and falling upon them in a rage they crushed their whole phalanx at once, not a man withstanding them, and most of their opponents being cut to pieces at close quarters.

At this point, then, Antigonus was defeated overwhelmingly, but with his cavalry he got the upper hand; for Peucestas fought in a way that was altogether lax and ignoble, and Antigonus captured all the baggage. He was a man who kept cool in the presence of danger, and he was aided by the ground.