3-10. Victory in Gaul
Julian’s aim would seem to have been to strike still deeper terror into the vanquished, and to secure his advantage in order that he might feel free to turn to the work which awaited him in the north. Three chieftains sued for peace after their land had been laid waste with fire and sword, and to seal this success Julian rebuilt a fortress which Trajan had constructed on the right bank of the Rhine. The great difficulty which faced the Caesar was the question of supplies, and one of the terms of the ten months' armistice granted to the Alemanni was that they should furnish the garrison of the Munimentum Trajani with provisions. It was this pressing necessity which demanded both an assertion of the power of Rome among the peoples dwelling about the mouths of the Meuse and Rhine, and also the reestablishment of the regular transport of corn from Britain.
During the campaign on the Main, Severus had been sent north to reconnoitre; the Franks now occupied a position of virtual independence in the district south of the Meuse, and in the absence of Roman garrisons and with the Caesar fully occupied by the operations against the Alemanni a troop of 600 Frankish warriors were devastating the countryside. They retired before Severus and occupied two deserted fortresses. Here for 54 days in December 357 and January 358 they were besieged by Julian who had marched north to support the magister equitum. Hunger compelled them at last to yield, for the relief sent by their fellow-tribesmen arrived too late.
Julian spent the winter in Paris, and in early summer advanced with great speed and secrecy, surprised the Franks in Toxandria and forced them to acknowledge Roman supremacy. Further north the Chamavi had been driven by the pressure of the Saxons in their rear to cross the Rhine and to take possession of the country between that river and the Meuse. The co-operation of Severus enabled Julian to force them to submission, and it would appear that in consequence they retired to their former homes on the Yssel. The lower Rhine was now once more in Roman hands ; the generalship of Julian had achieved what the praefect Florentius had deemed that Roman gold could alone secure, and the building of a fleet of 400 sea-going vessels was at once begun. The lower Rhine secured, Julian forthwith returned to his unfinished task in the south. It was imperative that the ravaged provinces of Gaul should be repeopled: their desolation and the honour of the Empire alike demanded that the prisoners in the hands of the barbarians should be restored. The remorseless ravaging of his land compelled Hortarius to yield, to surrender his Roman captives and to furnish timber for the rebuilding of the Roman towns.
The winter past, Julian once more left Paris and with his new fleet brought the corn of Britain to the garrisons of the Rhine. Seven fortresses, from Castra Herculis in the land of the Batavi to Bingen in the south, were reconstructed, and then in a last campaign against the most southerly tribes of the Alemanni, those chieftains who had taken a leading part in the battle of Strassburg were forced to tender their submission. It was no easy matter to secure the release of the Roman prisoners, but Julian could claim to have restored 20,000 of these unfortunates to their homes. The Caesar's work was done: Gaul was once more in peace and the Rhine the frontier of the Empire.
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