A Manual of Ancient History

by M. E. Thalheimer

218. Though the Roman Empire seemed to be doomed to destruction, equally by disunion within and the attacks of barbarians from without, its final disruption was delayed by a succession of able emperors. Claudius, who succeeded Gallienus, A. D. 268, vanquished the Alemanni in Italy, and the Goths in Mœsia. Aurelian (A. D. 270-275) again routed the Goths in Pannonia; and then recalling the advice of Augustus, he ceded to the barbarians the provinces north of the Danube, removing the Roman inhabitants to Mœsia. He made a war against Zenobia, which ended in the capture of the “Queen of the East,” and the overthrow of her kingdom. A still more difficult enterprise awaited Aurelian in the west, where Tet´ricus, the last successor of Posthumus, had united Gaul, Spain, and Britain into one powerful monarchy. But he was conquered, and the empire was again established on the borders of the Atlantic, A. D. 274.

Aurelian was about to turn his victorious arms against the Persians, when he was assassinated by several of his officers, owing to a plot formed by his secretary, Mnes´theus. The army, indignant at the crime, applied to the Senate for a new emperor, instead of permitting any general to seize the crown. The Senate, after six months’ hesitation, during which the soldiers respectfully waited, named M. Claudius Tac´itus, a senator of vast wealth and blameless character. He would gladly have declined the laborious and perilous position, on account of his age and infirmities; but the Senate insisted, and Tacitus was crowned. All the acts of his short reign were directed to the improvement of morals, and the establishment of law and order throughout the empire. He was called away to Asia Minor, where a troop of Goths, engaged by Aurelian to serve in his Eastern expedition, were committing disorders for want of pay. They were expelled; but Tacitus, enfeebled by old age, sank under the exertion, and he died two hundred days from his accession to the throne, A. D. 276.

219. Florian, brother of Tacitus, assumed the purple at Rome, while the army in the East proclaimed Probus, their general. The soldiers of Florian, however, refused to fight their comrades, and, after three months, put their leader to death. Probus, thus undisputed master of the Roman world, was an able general and a wise and beneficent sovereign. He not only drove the Germans out of Gaul, subdued the Sarmatians, and terrified the Goths into peaceable behavior, but he provided for the security of his extended frontier by settling the border provinces with numerous colonies of barbarians, who, becoming civilized, made a barrier against further incursions of their countrymen. He wished, also, to improve waste lands by the draining of marshes and the planting of vines, and to employ in these works the dangerous leisure of his soldiers. But the legionaries did not share the thrifty policy of their emperor. They mutinied at Sir´mium, and by another murder ended the beneficent reign of Probus, A. D. 282.

220. Carus, the prætorian præfect, was hailed as emperor by the army, and conferred the title of Cæsar on his two sons, Cari´nus and Nume´rian. Leaving the former to govern the West, Carus, with Numerian, turned toward the East; first gained a great victory over the Sarmatians in Illyricum, and then proceeded to overrun Mesopotamia, and capture the two great cities of Seleucia and Ctes´iphon. He had advanced beyond the Tigris, and seemed about to overthrow the Persian kingdom, when he suddenly died, whether by lightning, by disease, or by the dagger, historians are not agreed.

His son Numerian yielded to the superstitious fears of his soldiers, and withdrew within the Roman boundaries. On the retreat he was murdered by his father-in-law, who was also prætorian præfect, and who hoped to conceal the crime until he could reap the fruits of it. But the army discovered the death of their beloved emperor, and set up Diocle´tian, the captain of the bodyguards, to avenge and succeed him.

Coin of Diocletian, enlarged twice the size.

Carinus, meanwhile, reigning in the West, was dazzling the Roman world by expensive games, and insulting it by his profligacy. Hearing of the murder and usurpation, he marched with a large and well-disciplined army to meet Diocletian, and joined battle near Margus, in upper Mœsia. The Western troops were victorious, but Carinus, while leading the pursuit, was slain by one of his own officers. His followers came to an agreement with those of Diocletian, who was universally hailed as emperor.

221. His accession began a new period in the empire, when the power of the sovereigns became more absolute, ceasing to be checked either by the lawful authority of the Senate or the insolence of the soldiers. During the ninety-two years which had elapsed since the death of Commodus, the legions had claimed the privilege, not only of raising to the imperial power whomsoever they might choose, but of removing the object of their choice whenever he ceased to content them. No general who desired to be emperor dared stint his donatives, or enforce the needful severity of discipline. But for the almost constant danger from barbarians without, the army, which was the real tyrant of the Roman world, might have already put an end to all order, peace, and civil government.