C. Julius Caesar, Gallic War

At the same time our horsemen, and light-armed infantry, who had been with those, who, as I have related, were routed by the first assault of the enemy, as they were betaking themselves into the camp, met the enemy face to face, and again sought flight into another quarter; and the camp-followers who from the Decuman Gate, and from the highest ridge of the hill had seen our men pass the river as victors, when, after going out for the purposes of plundering, they looked back and saw the enemy parading in our camp, committed themselves precipitately to flight; at the same time there arose the cry and shout of those who came with the baggage-train: and they (affrighted), were carried some one way, some another. By all these circumstances the cavalry of the Treviri were much alarmed, (whose reputation for courage is extraordinary among the Gauls, and who had come to Caesar, being sent by their state as auxiliaries), and, when they saw our camp filled with a large number of the enemy, the legions hard pressed and almost held surrounded, the camp-retainers, horsemen, slingers, and Numidians fleeing on all sides divided and scattered, they, despairing of our affairs, hastened home, and related to their state that the Romans were routed and conquered, [and] that the enemy were in possession of their camp and baggage-train.