Final answer:
Justinian wanted Belisarius to re-conquer the western empire and impose Christian uniformity through eliminating heresies.
Step-by-step explanation:
Justinian wanted his best general Belisarius to re-conquer the western empire from the Germanic kings that had taken over and to impose Christian uniformity through the elimination of Christian heresies like Arianism. Belisarius was sent to North Africa with a small force, where he defeated the Vandal army and retook North Africa for the empire. He was then dispatched to Italy to seize it from the Ostrogoths. Belisarius occupied Rome and recaptured other cities of Italy, making headway in the reconquest of the West.