The Fight for Rome (1968)

A Roman noble, Cethegus, tries to start a war, setting the Ostrogoths and their Queen, Amalasuntha, against the Byzantine Emperor Justinian; Cethegus wants to swoop in after they have destroyed each other and create a new Roman Empire from their combined kingdoms; however, he does not factor into his plans the vagaries of love and the personal integrity of the people in both kingdoms.