Complex sentence: He sent a huge army to re-capture the North African provinces from the Vandals, and by 534 AD, the Byzantium general Belisarius had destroyed the Vandal power and proceeded to march through Italy to conquer Rome from the Ostrogoths.
Split into simpler sentences: He sent a huge army to re-capture the North African provinces from the Vandals. By 534 AD, the Byzantium general Belisarius had destroyed the Vandal power and then marched to Italy to conquer Rome from the Ostrogoths.