C. Julius Caesar, Gallic War

Accordingly, messengers having been forthwith dispatched to the Centrones, the Grudii, the Levaci, the Pleumoxii, and the Geiduni, all of whom are under their government, they assemble as large bodies as they can, and rush unexpectedly to the winter-quarters of Cicero, the report of the death of Titurius not having as yet been conveyed to him. That also occurred to him, which was the consequence of a necessary work-that some soldiers who had gone off into the woods for the purpose of procuring timber and therewith constructing fortifications, were intercepted by the sudden arrival of [the enemy's] horse. These having been entrapped, the Eburones, the Nervii, and the Aduatici and all their allies and dependents, begin to attack the legion: our men quickly run together to arms and mount the rampart; they sustained the attack that day with great difficulty, since the enemy placed all their hope in dispatch, and felt assured that, if they obtained this victory, they would be conquerors forever.