13. Having arranged his own army in the form of a crescent, the engagement began, and the enemy were speedily surrounded and utterly defeated. Some were taken prisoners, others were slain in the heat of the battle, the rest sought safety by rapid flight. III. § 1. After this, meeting with no resistance, he determined to proceed to recover Cologne, which had been destroyed before his arrival in Gaul. In that district there is no city or fortress to be seen except that near Confluentes;[60] a place so named because there the river Moselle becomes mingled with the Rhine; there is also the village of Rheinmagen, and likewise a single tower near Cologne. 2. After having taken possession of Cologne he did not leave it till the Frank kings began, through fear of him, to abate of their fury, when he contracted a peace with them likely to be of future advantage to the republic. In the mean time he put the whole city into a state of complete defence. 3. Then, auguring well from these first-fruits of victory, he departed, passing through the district of Treves, with the intention of wintering at Sens, which was a town very suitable for that purpose. When bearing, so to say, the weight of a world of wars upon his shoulders, he was occupied by perplexities of various kinds, and among them how to provide for establishing in places most exposed to danger the soldiers who had quitted their former posts; how to defeat the enemies who had conspired together to injure the Roman cause; and further, how to provide supplies for the army while employed in so many different quarters. IV. § 1. While he was anxiously revolving these things in his mind, he was attacked by a numerous force of the enemy, who had conceived a hope of being able to take the town. And they were the more confident of success because, from the information of deserters, they had learnt that he neither had with him his Scutarii nor his Gentiles, both of which bodies of troops had been distributed among the different municipal towns in order that they might be the more easily supplied with provisions. 2. Therefore after the gates of the city had been barricaded, and the weakest portions of the walls carefully strengthened, Julian was seen night and day on the battlements and ramparts, attended by a band of armed men, boiling over with anger and gnashing his teeth, because, often as he wished to sally forth, he was prevented from taking such a step by the scantiness of the force which he had with him.