THE THIRTY TYRANTS
[260-268 A.D.]
The Roman troops in the East meantime, being resolved not to submit to Gallienus, were deliberating on whom they would bestow the purple. Acting under the advice of Balista, they fixed on the prætorian prefect, M. Fulvius Macrianus, a man of great military talents and, what was perhaps of more importance in their eyes, extremely wealthy. Macrianus conferred the office of prætorian prefect on Balista, and leaving with him his younger son and a part of the army to defend the East, he put himself at the head of forty-five thousand men, and taking with him his elder son, set out for Europe (261). On the borders of Illyricum he was encountered by M. Acilius Aureolus, the governor (or as some say the tyrant) of that province, and in the battle which ensued, himself and his son were slain, and his troops surrendered. After the death of Macrianus, Balista assumed the purple, but he was slain by order of Odenathus, whom Gallienus (264), with the full consent of the senate and people of Rome, had made his associate in the empire, giving him the titles of cæsar, augustus, and all the other tokens of sovereignty.
Ti. Cestius Æmilianus, who commanded in Egypt, assumed the purple in that province (262), in consequence it is said of a sedition in the most turbulent city of Alexandria; but he was defeated the following year, taken prisoner, and sent to Gallienus, who caused him to be strangled.
It was in Gaul that the usurpers had most success. As soon as Gallienus left that country (260), the general M. Cassianus Latinius Postumus was proclaimed emperor, and his authority appears to have been acknowledged in both Spain and Britain. He is described as a man of most noble and upright character; he administered justice impartially, and he defended the frontier against the Germans with valour and success. Possessed of the affections of the people, he easily maintained himself against all the efforts of Gallienus; but he was slain at last (267) in a mutiny of his own soldiers, to whom he had refused the plunder of the city of Mogontiacum, in which a rival emperor had appeared. Postumus had associated with himself in the empire Victorinus, the son of a lady named Aurelia Victoria, who was called the Mother of the Camp, and who had such influence with the troops, we know not how acquired, but probably by her wealth, as to be able to give the purple to whom she pleased. Victorinus being slain by a man whose wife he had violated, a simple armourer, named Marius, wore the purple for two days, at the end of which he was murdered; and Victoria then caused a senator named C. Pivesus Tetricus to be proclaimed emperor, who maintained his power for some years.
At the time when Macrianus claimed the empire, P. Valerius Valens, the governor of Greece, finding that that usurper, who was resolved on his destruction, had sent L. Calpurnius Piso against him, assumed the purple in his own defence. Piso, being forced to retire into Thessaly, caused himself to be proclaimed emperor there; but few joined him, and he was slain by a party of soldiers sent against him by Valens, who was himself shortly after put to death by his own troops. Both Valens and Piso were men of high character, especially the latter, to whom the senate decreed divine honours, and respecting whom Valens himself said that he would not be able to account to the gods below for having ordered Piso, though his enemy, to be slain, a man whose like the Roman Republic did not then possess.
C. Annius Trebellianus declared himself independent in Isauria, and T. Cornelius Celsus was proclaimed emperor in Africa; but both speedily perished (265). Among the calamities of this reign was an insurrection of the slaves in Sicily, similar to those in the time of the republic.
While his empire was thus torn asunder, Gallienus thought only of indulgence, and the loss of a province only gave him occasion for a joke. When Egypt revolted, “Well,” said he, “cannot we do without Egyptian linen?” So when Gaul was lost, he asked if the republic could not be secure without cloaks from Arras. He was content to retain Italy, satisfied with a nominal sovereignty over the rest of the empire; and whenever this seat of dominion was menaced, he exhibited in its defence the vigour and personal courage which he really possessed.
Gaul and Illyricum were the quarters from which Italy had most to apprehend. Gallienus therefore headed his troops against Postumus, and when D. Lælius Ingenuus revolted in Pannonia, he marched against him, defeated and slew him, and made the most cruel use of his victory to deter others (260). Q. Nonius Regalianus, who afterwards revolted in the same country, was slain by his own soldiers (263); but when Aureolus was induced to assume the purple (267) the Illyrian legions advanced and made themselves masters of Mediolanum (the modern Milan). Gallienus, shaking off sloth, appeared at the head of his troops; the hostile armies encountered on the banks of the Addua, and Aureolus was defeated, wounded, and forced to shut himself up in Mediolanum. During the siege a conspiracy was formed against the emperor by some of the principal officers of his army, and one night as he was sitting at table a report was spread that Aureolus had made a sally. Gallienus instantly threw himself on horseback to hasten to the point of danger, and in the dark he received a mortal wound from an unknown hand.
We now enter on a series of emperors of a new order. Born nearly all in humble stations, and natives of the province of Illyricum, they rose by merit through the gradations of military service, attained the empire in general without crime, maintained its dignity, and checked or punished the inroads of the barbarians. This series commences with the death of Gallienus and terminates with that of Licinius, embracing a period of somewhat more than half a century, and marked, as we shall find, by most important changes in the Roman Empire. [Thus the military revolution now begins to bear good fruit.]