Marcus Aurelius, however, was greater than the danger; he became its master. Not a foot of Roman territory was lost; on the contrary, many thousand homeless Germans settled in the empire as new brave subjects. There was now for half a century an apparent cessation of the process of destruction, but only of its external manifestations, not of the internal efforts and preparations towards this end. The Roman tithe province (agri decumates) between the Rhine and the Danube, unprotected by any natural boundaries, was the first field of Germanic occupation. At what date the chief mass of Vandals and Burgundiones, together with the Lygii, migrated from their settlements between the Oder and the Vistula to the Roman frontiers, we have no knowledge. We first encounter them under Probus in the year 277, acting in the rear of the older frontier tribes as their allies.
For over half a century, from 211 to 268, Rome had no great emperor; indeed, with the exception of Maximinus, 235-238, not even a warrior. He, however, was a rude barbarian who knew only how to fight and to conquer, not how to organise. Then began the period of decline, in which one emperor, Decius, fell upon the battle-field, and another, Valerian, was carried into lifelong captivity. Simultaneously there rose up in the East (about the year 226) a new and terrible foe, the powerful Sapor, one of the Persian Sassanidæ, by whom the rule of the Parthians was overthrown, and who was burning to become a second Cyrus. Under Gallienus, Valerian’s son, 260-268, the misery of Rome reached its height. In expeditions of hitherto unheard-of magnitude, the Goths during ten years overran Asia Minor and Greece to Macedonia; the noblest and finest towns of antiquity fell in flames.
[268-367 A.D.]
But the greatest evil of all, at least in the West, was the civil war. Nineteen tyrants, usurpers, rose against the ruler; amongst whom, however, two, Odenathus and his wife Zenobia, victoriously defended the empire against the Persians. For fifteen years the West languished under tyrants, of whom the first, Postumus, was certainly more powerful than the rightful emperor.
There was no longer any talk of repulsing the foreign foe; the fact that a great number of Germans were in both armies fighting for and against each other was only a diminution of the danger. Further districts of Gaul were being constantly annexed and won back from the barbarians, and a small host of Franks pressed fighting into Spain, and after twelve years lost itself in Africa. Not only the beginning of the end, but the end itself seemed to have set in, when Rome was again saved and raised almost to its former glory by a series of brave and great emperors. But the true saviour of the empire was Diocletian (285-305), the wisest if not the bravest of these. By his state reforms he built up the empire on a new foundation, suitable to the needs of his time. His predecessors had rendered harmless the most dangerous foes of the empire, the Goths—Claudius by his glorious victory at Naissus, and Aurelian by the cession of the large province of Dacia.
A Barbarian
The new Probus, however, had so completely vanquished the peoples of the West with their allies, Vandals, Burgundiones, and Lygii, that he was able to announce to the senate: “The whole of Germania, as far as it reaches, is subdued. Nine kings of different peoples lie at your feet.” In the next two years, however, the conquered people uprose once more, and the old state of affairs seemed to be returning, when Diocletian in the year 285 brought permanent succour.
The division of the imperial government among those brave and able men whom he appointed “cæsars” checked the German peril. His successor and the completer of his work, Constantine the Great, brought (at all events to the eastern portion of the empire) fresh life and more than a thousand years’ duration, by establishing his own place of residence at Constantinople. But once again, under the reign of Constantius, weak son of a great father, the lust of war and plunder was awakened in the barbarians of the West by the rise of a new tyrant in Gaul, and the civil war resulting therefrom. Already the Rhenish strongholds, amongst them Colonia Agrippina (Cologne), were in their hands when a new preserver, the youthful Julian, came upon the scene.
He, like Cæsar, knew how to fight and conquer. The Salian Franks, who had usurped the country between the Schelde and the Maas, Toxandria, were taken as subjects; the Ripuarians, even the Saxon Chauci, were forced to a submissive peace, and the Alamanni compelled, after four campaigns, to the condition of tributaries.
[367-476 A.D.]