The Last Legion from the publication of British historian Edward Gibbon's History of the Decline and Fall of the Roman Empire in the late 18th Century. At the time of his proclamation as Emperor, Romulus Augustus was 16, older than portrayed in the film. Upon being captured by Odoacer, the boy usurper was seen to be a victim of his father. He was spared and sent to live in comfortable retirement in southern Italy. There was a struggle for control of the Eastern Roman Empire at the time but the Emperor alluded to would probably have been Zeno (explicit in the novel). In
Campaign history of the Roman military war with Yazdegerd II was again swiftly concluded by treaty after both parties battled threats elsewhere. Many theories have been advanced in way of explanation for decline of the Roman Empire, and many dates given for its fall, from the onset of its decline in the 3rd century to the fall of Constantinople in 1453. Militarily, however, the Empire finally fell after first being overrun by various non-Roman peoples and then having its heart in Italy seized by Germanic troops in a revolt. The historicity and exact dates are uncertain, and some historians do not consider that the Empire fell