Gallic War (2.7-2.11)

Thither, immediately after midnight, Caesar, using as guides the same persons who had come to him as messengers from Iccius, sends some Numidian and Cretan archers, and some Balearian slingers as a relief to the towns-people, by whose arrival both a desire to resist together with the hope of [making good their] defense, was infused into the Remi, and, for the same reason, the hope of gaining the town, abandoned the enemy. Therefore, after staying a short time before the town, and laying waste the country of the Remi, when all the villages and buildings which they could approach had been burned, they hastened with all their forces to the camp of Caesar, and encamped within less than two miles [of it]; and their camp, as was indicated by the smoke and fires, extended more than eight miles in breadth.

Caesar at first determined to decline a battle, as well on account of the great number of the enemy as their distinguished reputation for valor: daily, however, in cavalry actions, he strove to ascertain by frequent trials, what the enemy could effect by their prowess and what our men would dare. When he perceived that our men were not inferior, as the place before the camp was naturally convenient and suitable for marshaling an army (since the hill where the camp was pitched, rising gradually from the plain, extended forward in breadth as far as the space which the marshaled army could occupy, and had steep declines of its side in either direction, and gently sloping in front gradually sank to the plain); on either side of that hill he drew a cross trench of about four hundred paces, and at the extremities of that trench built forts, and placed there his military engines, lest, after he had marshaled his army, the enemy, since they were so powerful in point of number, should be able to surround his men in the flank, while fighting. After doing this, and leaving in the camp the two legions which he had last raised, that, if there should be any occasion, they might be brought as a reserve, he formed the other six legions in order of battle before the camp. The enemy, likewise, had drawn up their forces which they had brought out of the camp.

There was a marsh of no great extent between our army and that of the enemy. The latter were waiting to see if our men would pass this; our men, also, were ready in arms to attack them while disordered, if the first attempt to pass should be made by them. In the mean time battle was commenced between the two armies by a cavalry action. When neither army began to pass the marsh, Caesar, upon the skirmishes of the horse [proving] favorable to our men, led back his forces into the camp. The enemy immediately hastened from that place to the river Aisne, which it has been; stated was behind our camp. Finding a ford there, they endeavored to lead a part of their forces over it; with the design, that, if they could, they might carry by storm the fort which Q. Titurius, Caesar's lieutenant, commanded, and might cut off the bridge; but, if they could not do that, they should lay waste the lands of the Remi, which were of great use to us in carrying on the war, and might hinder our men from foraging.

Caesar, being apprized of this by Titurius, leads all his cavalry and light-armed Numidians, slingers and archers, over the bridge, and hastens toward them. There was a severe struggle in that place. Our men, attacking in the river the disordered enemy, slew a great part of them. By the immense number of their missiles they drove back the rest, who, in a most courageous manner were attempting to pass over their bodies, and surrounded with their cavalry, and cut to pieces those who had first crossed the river. The enemy, when they perceived that their hopes had deceived them both with regard to their taking the town by storm and also their passing the river, and did not see our men advance to a more disadvantageous place for the purpose of fighting, and when provisions began to fail them, having called a council, determined that it was best for each to return to his country, and resolved to assemble from all quarters to defend those into whose territories the Romans should first march an army; that they might contend in their own rather than in a foreign country, and might enjoy the stores of provision which they possessed at home. Together with other causes, this consideration also led them to that resolution, viz: that they had learned that Divitiacus and the Aedui were approaching the territories of the Bellovaci. And it was impossible to persuade the latter to stay any longer, or to deter them from conveying succor to their own people.

That matter being determined on, marching out of their camp at the second watch, with great noise and confusion, in no fixed order, nor under any command, since each sought for himself the foremost place in the journey, and hastened to reach home, they made their departure appear very like a flight. Caesar, immediately learning this through his scouts, [but] fearing an ambuscade, because he had not yet discovered for what reason they were departing, kept his army and cavalry within the camp. At daybreak, the intelligence having been confirmed by the scouts, he sent forward his cavalry to harass their rear; and gave the command of it to two of his lieutenants, Q. Pedius, and L. Aurunculeius Cotta. He ordered T. Labienus, another of his lieutenants, to follow them closely with three legions. These, attacking their rear, and pursuing them for many miles, slew a great number of them as they were fleeing; while those in the rear with whom they had come up, halted, and bravely sustained the attack of our soldiers; the van, because they appeared to be removed from danger, and were not restrained by any necessity or command, as soon as the noise was heard, broke their ranks, and, to a man, rested their safety in flight. Thus without any risk [to themselves] our men killed as great a number of them as the length of the day allowed; and at sunset desisted from the pursuit, and betook themselves into the camp, as they had been commanded.