Byzantines led by Belisarius defeated the Vandal King Gelimer at the Battle of Tricamarum, completing the "Reconquest of North Africa" under Byzantine Emperor Justinian I. Belisarius: Flavius Belisarius was a military commander of the Byzantine Empire under Emperor Justinian I. Belisarius was instrumental in the reconquest of much of the Mediterranean territory belonging to the former Western Roman Empire, which had been lost less than a century prior. He is considered one of the greatest military commanders of Byzantium and in history generally. December 15, 533. Wiki link