cf. Procopius, History of the Wars of Justinian 4.12.3 and 5 (web address 1; see Kaldellis (215-216). For Belisarius see beta 233. In fact, Belisarius returned to Constantiople in the summer of 534 CE and had left the command of the Roman army in Africa to Solomon; cf. PLRE IIIb s.v. Solomon(1).
[1] N. Africa. See, for example, omicron 228. In the spring of 535, the rebelling Moors had begun to overrun the Roman province of Byzacena (Byzacium, in modern-day northeastern Tunisia; cf. Barrington Atlas map 32 grid F4). Solomon came south with his army from Carthage, engaged the Moors, and defeated them decisively in battle on the slopes of Mount Bourgaôn, whose exact location is unknown; cf. Kaldellis (215 note 401).