Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
After consideration of the difficult situation, five hundred soldiers who were approved by experience as prudent in battle were selected from each legion, to be opposed to obstacles like those of city walls. Their confident spirit was all the greater because the emperor was seen actively engaged in the foremost ranks, and they strove to scale the mountains, expecting that if they should set foot on the higher places, they would at once and without a struggle carry them off, as if they were booty taken in the chase. But the battle, which began towards midday, was even overtaken by the darkness of night.
Both sides indeed suffered severe losses; our men slew many, but not a few of their own number fell, and at the same time the armour of the imperial guard, gleaming with gold
Then, after long conference with the men of highest rank, Gratian thought it dangerous and fruitless to struggle with untimely obstinacy against rugged jutting heights; opinions varied greatly, as was natural in such circumstances, but it was finally decided that, with the soldiers at rest, the barbarians should be shut in on all sides and exhausted by famine, since they were protected by the unevenness of the ground.
But when the Germans resisted with the same persistence, and, being acquainted with the country, made for other mountains, higher than those which they had occupied before, the emperor wheeled in that direction with his army, and with the same courage as before sought to find paths leading to the heights.
When the Lentienses perceived that he was determined with most earnest persistence to have their lives, they obtained mercy as the result of humble supplications, and surrendered; then giving their strong young manhood (as they were ordered) to be mingled with our recruits, they were allowed to go without punishment to their native lands.
Incredibly great energy and conspicuous rapidity were shown by Gratian, while he was hastening in another direction, when through the favour of the eternal deity he won this victory, which was at once seasonable and profitable, since it tamed the western nations. He was a young man of spendid character, eloquent, self-restrained, war-like, and merciful, and was already on his way to rivalry with the most distinguished emperors while yet a comely down