 Complete the following phrase:  According to the account of Procopius De bello Persico, , Azarethes was placed in command of the Persian army in Mesopotamia after the Persian defeat in the Battle of Dara in 530. Procopius calls him an exceptionally able warrior, and Zacharias of Mytilene records that he held the rank of astabadh. In 531, together with his Lakhmid allies, he led an invasion across the Euphrates into the Byzantine region of Commagene more probably Chalybonitis. When the Byzantine army under Belisarius approached, they withdrew east, halting at Callinicum. In the 