Ammianus Marcellinus, Rerum Gestarum
John C. Rolfe, Ph.D., Litt.D., Ed.

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Julianus Caesar attacks the Alamanni on the islands of the Rhine, to which they had fled with their belongings, and refits Tres Tabernae against them.

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But Julianus Caesar, after having passed a troubled winter at Sens, ¹ in the year when the emperor was consul for the ninth time and he for the second, with the threats from the Germans thundering on every side, stirred by favourable omens hastened to Rheims. He felt the greater eagerness and pleasure because Severus was commanding the army, a man neither insubordinate nor overbearing [p. 257] but well known for his long excellent record in the army, who had followed Julian as he advanced straight ahead, as an obedient soldier follows his general. [2] From another direction Barbatio, who had been promoted after Silvanus' death to the command of the infantry, came from Italy at the emperor's order with twenty-five thousand soldiers to Augst. [3] For it was planned and carefully arranged beforehand that the Alamanni, who were raging beyond their customary manner and ranging more afield, should be driven into straits as if with a pair of pliers ² by twin forces of our soldiers, and cut to pieces. [4] But while these well-laid plans were being hurried on, the Laeti, a savage tribe skilled in seasonable raids, passed secretly between the encampments of both armies and made an unlooked for attack on Lyons; and with their sudden onset they would have sacked and burned the town, had they not been driven back from the closed gates but made havoc of whatever they could find outside the town. [5] This disaster was no sooner known than Caesar, with quick grasp of the situation, sent three squadrons of brave light cavalry and watched three roads, knowing that the raiders would doubtless burst forth by them; and his ambuscade was not in vain. [6] For all who passed out by those roads were butchered and all their booty recovered intact, and only those escaped unharmed who made their way undisturbed past the rampart of Barbatio; being allowed so to slip by because Bainobaudes, the tribune, [p. 259] and Valentinian, afterwards emperor, who with the cavalry troops they commanded had been ordered to attend to that matter, were forbidden by Cella, tribune of the targeteers, who had come to the campaign as Barbatio's colleague, to watch the road over which they were informed that the Germans would return. [7] And not content with that, the infantry commander, who was a coward and a persistent detractor of Julian's reputation, knowing that what he had ordered was against the interests of the Roman cause (for when Cella was charged with this, he confessed it), deceived Constantius in his report and pretended that these same tribunes had come, under the pretext of public business, to tamper with the soldiers whom he had been commanding; and for that reason they were cashiered and returned to their homes in a private capacity.

[8] At that same time the savages who had established their homes on our side of the Rhine, were alarmed by the approach of our armies, and some of them skilfully blocked the roads (which are difficult and naturally of heavy grades) by barricades of felled trees of huge size; others, taking possession of the islands which are scattered in numbers along the course of the Rhine, with wild and mournful cries heaped insults upon the Romans and Caesar. Whereupon he was inflamed with a mighty outburst of anger, and in order to catch some of them, asked Barbatio for seven of the ships which he had got ready for building bridges with the intention of crossing the river; but Barbatio burned them all, in order that he might be unable [p. 261] to give any help. [9] Finally Julian, learning from the report of some scouts just captured, that now in the heat of summer the river could be forded, with words of encouragement sent the light-armed auxiliaries with Bainobaudes, tribune of the Cornuti, to perform a memorable feat, if fortune would favour them; and they, now wading through the shallows, now swimming on their shields, which they put under them like canoes, ³ came to a neighbouring island and landing there they butchered everyone they found, men and women alike, without distinction of age, like so many sheep. Then, finding some empty boats, they rowed on in these, unsteady as they were, and raided a large number of such places; and when they were sated with slaughter, loaded down with a wealth of booty (a part of which they lost through the force of the current) they all came back safe and sound. [10] And the rest of the Germans, on learning of this, abandoned the islands as an unsafe refuge and carried off into the interior their families, their grain, and their rude treasures. [11] From here Julian turned aside to repair the fortress called Tres Tabernae, ⁴ destroyed not long before by the enemy's obstinate assault, the rebuilding of which ensured that the Germans could not approach the interior of Gaul, as they had been wont to do. And he both finished this work sooner than was expected and, for the garrison that was to be stationed there, he stored up food for the needs of a whole year, gathered together by the hands of the soldiers, not without fear of danger, from the savages' crops. [12] And not content with that alone, he gathered for [p. 263] himself also rations to serve for twenty days. For the warriors the more willingly made use of what they had won by their own right hands, being greatly incensed because from the supplies which had just been brought them they could get nothing, since Barbatio had arrogantly appropriated a part of them, when they were passing near him; and piled in a heap what remained over and burned it. Whether he did this like an empty-headed fool, or at the emperor's bidding brazenly perpetrated his many abominable acts, has remained obscure up to this time. [13] However, it was current rumour everywhere, that Julian was not chosen to relieve the distress of Gaul, but that he might meet his death in the cruellest of wars, being even then (as it was thought) inexperienced and one who could not stand even the clash of arms. [14] While the fortifications of the camp were rapidly rising and part of the soldiers were garrisoning the country posts, part gathering in grain warily for fear of ambush, a horde of savages, outstripping by their extraordinary speed any rumour of their coming, with a sudden attack set upon Barbatio and the army he commanded, which was (as has been said) separated from the Gallic camp; and they followed them in their flight as far as Augst, and as much farther as they could; then, after seizing the greater part of his baggage and pack-animals, together with the camp-followers, they returned home again. [15] And Barbatio, as if he had ended the campaign successfully, distributed his soldiers in winter quarters and returned to the emperor's court, to frame some charge against Caesar, as was his custom.

[p. 265]