He stayed with Quietus in the East, while Macrianus and his elder son moved with the army against the West. In the Balkans, Macriani were routed by the commander of Roman cavalry, Aureolus, a general loyal to Gallienus, and killed. Then Gallienus invited Odenathus to turn against his former allies, Ballista and Quietus. Neither the time nor manner of Balista's death can be ascertained with certainty, but it is believed to have happened about November 261, and to have been contrived by Odaenathus. Another suggestion is that they were killed by their own men at Emesa.