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).
But the savages, thunderstruck at the vastness of the feat, since they little expected that they could be molested, settled as they were amid undisturbed peace, gave anxious thought to what might threaten their own fortunes, in view of the destruction of the others; and so under pretence of a prayer for peace, with the purpose of avoiding the brunt of the first onslaught, they sent envoys with set speeches, to declare the harmonious validity of the treaties with them; but for some unknown design that they suddenly formed they changed their minds, and by other messengers whom they forced to come post haste, they threatened our men with most bitter warfare, unless they should withdraw from their territory.
On learning this from a sure source, Caesar at the first quiet of nightfall embarked eight hundred soldiers on small, swift boats, so that they might go up the Rhine for a distance of twenty stadia, disembark, and with fire and sword lay waste
This arrangement thus made, at the very break of day the savages were seen drawn up along the hill-tops, and the soldiers in high spirits were led up to the higher ground; but they found no one there (since the enemy, suspecting this, had hastily decamped), and then great columns of smoke were seen at a distance, revealing that our men had burst in and were devastating the enemy’s territory.
This action broke the Germans’ spirit, and abandoning the ambuscades which they had laid for our men in narrow and dangerous places, they fled across the river, Menus[*](Main.) by name, to bear aid to their kinsfolk.