C. Julius Caesar, Gallic War

The Gauls, having been twice repulsed with great loss, consult what they should do; they avail themselves of the information of those who were well acquainted with the country; from them they ascertain the position and fortification of the upper camp. There was, on the north side, a hill, which our men could not include in their works, on account of the extent of the circuit, and had necessarily made their camp in ground almost disadvantageous, and pretty steep. Caius Antistius Reginus, and Caius Caninius Rebilus, two of the lieutenants, with two legions, were in possession of this camp. The leaders of the enemy, having reconnoitered the country by their scouts, select from the entire army sixty thousand men, belonging to those states, which bear the highest character for courage; they privately arrange among themselves what they wished to be done, and in what manner; they decide that the attack should take place when it should seem to be noon. They appoint over their forces Vergasillaunus, the Arvernian, one of the four generals, and a near relative of Vercingetorix. He, having issued from the camp at the first watch, and having almost completed his march a little before the dawn, hid himself behind the mountain, and ordered his soldiers to refresh themselves after their labor during the night. When noon now seemed to draw nigh, he marched hastily against that camp which we have mentioned before; and, at the same time, the cavalry began to approach the fortifications in the plain, and the rest of the forces to make a demonstration in front of the camp.