A general who reorganized the Byzantine army?

One notable general who reorganized the Byzantine army was Belisarius, a prominent military leader under Emperor Justinian I in the 6th century. He implemented significant reforms that improved the army's effectiveness, including strategic use of cavalry and the incorporation of new tactics and formations. His successful campaigns, particularly against the Vandals in North Africa and the Goths in Italy, showcased the effectiveness of these reorganizations and helped to expand the Byzantine Empire during Justinian's reign. Belisarius is often regarded as one of the greatest generals in Byzantine history.