Gallic War (7.83-7.86)

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.

Vercingetorix, having beheld his countrymen from the citadel of Alesia , issues forth from the town; he brings forth from the camp long hooks, movable pent-houses, mural hooks, and other things, which he had prepared for the purpose of making a sally. They engage on all sides at once and every expedient is adopted. They flocked to whatever part of the works seemed weakest. The army of the Romans is distributed along their extensive lines, and with difficulty meets the enemy in every quarter. The shouts which were raised by the combatants in their rear, had a great tendency to intimidate our men, because they perceived that their danger rested on the valor of others: for generally all evils which are distant most powerfully alarm men's minds.

Caesar, having selected a commanding situation, sees distinctly whatever is going on in every quarter, and sends assistance to his troops when hard pressed. The idea uppermost in the minds of both parties is, that the present is the time in which they would have the fairest opportunity of making a struggle; the Gauls despairing of all safety, unless they should succeed in forcing the lines: the Romans expecting an end to all their labors if they should gain the day. The principal struggle is at the upper lines, to which as we have said Vergasillaunus was sent. The least elevation of ground, added to a declivity, exercises a momentous influence. Some are casting missiles, others, forming a testudo, advance to the attack; fresh men by turns relieve the wearied. The earth, heaped up by all against the fortifications, gives the means of ascent to the Gauls, and covers those works which the Romans had concealed in the ground. Our men have no longer arms or strength.

Caesar, on observing these movements, sends Labienus with six cohorts to relieve his distressed soldiers: he orders him, if he should be unable to withstand them, to draw off the cohorts and make a sally; but not to do this except through necessity. He himself goes to the rest, and exhorts them not to succumb to the toil; he shows them that the fruits of all former engagements depend on that day and hour. The Gauls within, despairing of forcing the fortifications in the plains on account of the greatness of the works, attempt the places precipitous in ascent: hither they bring the engines which they had prepared; by the immense number of their missiles they dislodge the defenders from the turrets: they fill the ditches with clay and hurdles, then clear the way; they tear down the rampart and breast-work with hooks.