de bello gallico, 5.37

Sabinus orders which tribunes of the soldiers he had at hand around him and the centurions of the first ranks to follow him, and, when he had more closely approached Ambiorix, having been ordered to throw down his arms, he follows the order and commands his men to do the same. Meanwhile, while they work among themselves about the terms, and a longer debate is deliberately set up by Ambiorix, having been surrounded little by little, he is slain. Then indeed, by their custom, they shout out "Victory," and raise a howling and, an attack having been made on our men, break their ranks. There Lucius Cotta, fighting, is slain, together with the greatest part of the soldiers. The rest take themselves back into the camp from which they had marched forth. Of these, Lucius Petrosidius, the standard bearer, when he was overpowered by the great multitude of the enemy, threw the eagle within the entrenchments; he himself is slain while fighting most bravely before the camp. Those men scarcely sustain the attack until night: during the night, with safety having been given up as hopeless, they all to a man kill themselves. A few, having slipped from the battle, by uncertain routes through the woods make their way to Titus Labienus at his winter-quarters and make him more certain (=tell him) of these happenings.