Complex sentence: He remained in Africa after Belisarius' departure, serving in Byzacena against the Moors ("Mauri") under Solomon, while under Germanus, he commanded the right wing of the army at Scalae Veteres against the renegade Stotzas.
Split into simpler sentences: He remained in Africa after Belisarius'departure, serving in Byzacena against the Moors ("Mauri") under Solomon. Under Solomon's successor Germanus, he commanded the right wing of the army at the battle of Scalae Veteres, against the renegade Stotzas.