C. Julius Caesar, Gallic War

By their arrival, so great a change of matters was made, that our men, even those who had fallen down exhausted with wounds, leaned on their shields, and renewed the fight: then the camp-retainers, though unarmed, seeing the enemy completely dismayed, attacked [them though] armed; the horsemen too, that they might by their valor blot the disgrace of their flight, thrust themselves before the legionary soldiers in all parts of the battle. But the enemy, even in the last hope of safety, displayed such great courage, that when the foremost of them had fallen, the next stood upon them prostrate, and fought from their bodies; when these were overthrown, and their corpses heaped up together, those who survived cast their weapons against our men [thence], as from a mound, and returned our darts which had fallen short between [the armies]; so that it ought not to be concluded, that men of such great courage had injudiciously dared to pass a very broad river, ascend very high banks, and come up to a very disadvantageous place; since their greatness of spirit had rendered these actions easy, although in themselves very difficult.