Crassus

While Crassus was still investigating and considering these matters, there came an Arab chieftan, Ariamnes by name, a crafty and treacherous man, and one who proved to be, of all the mischiefs which fortune combined for the destruction of the Romans, the greatest and most consummate.

Some of the soldiers who had served under Pompey in these parts knew that the fellow had profited by the kindness of that commander and was thought to be a friend of Rome; but now, with the knowledge of the royal generals, he tried to work his way into the confidence of Crassus, to see if he could turn him aside as far as possible from the river and the foot-hills, and bring him down into a boundless plain where he could be surrounded. For nothing was farther from the thoughts of the Parthians than to attack the Romans in front.