The Persians pursued in a long column, and were carrying all before them, when once more an impetuous flank charge of the barbarian cavalry, which now formed an important element in the Roman armies, changed the face of affairs, and indeed decided the fortune of the day.

The Persian column was actually cut in two by the Massagetic horse; those who had advanced the furthest were completely separated from their friends, and were at once surrounded and slain.

Among them was the standard-bearer of Baresmanes, who commanded the Persian left.
The fall of this man increased the general confusion.

In vain did the Persian column, checked in its advance, attempt an orderly retreat.

The Romans assaulted it in front and on both flanks, and a terrible carnage ensued.