Gallic War

Labienus, since he was confining himself within a camp strongly fortified by the nature of the ground and by art, had no apprehensions as to his own and the legion's danger, but was devising that he might throw away no opportunity of conducting the war successfully. Accordingly, the speech of Indutiomarus, which he had delivered in the council, having been made known [to him] by Cingetorix and his allies, he sends messengers to the neighboring states and summons horse from all quarters: he appoints to them a fixed day for assembling. In the mean time, Indutiomarus, with all his cavalry, nearly every day used to parade close to his [Labienus'] camp; at one time, that he might inform himself of the situation of the camp; at another time, for the purpose of conferring with or of intimidating him. Labienus confined his men within the fortifications, and promoted the enemy's belief of his fear by whatever methods he could.

Since Indutiomarus was daily advancing up to the camp with greater defiance, all the cavalry of the neighboring states which he [Labienus] had taken care to have sent for, having been admitted in one night, he confined all his men within the camp by guards with such great strictness, that that fact could by no means be reported or carried to the Treviri . In the mean while, Indutiomarus, according to his daily practice, advances up to the camp and spends a great part of the day there: his horse cast their weapons, and with very insulting language call out our men to battle. No reply being given by our men, the enemy, when they thought proper, depart toward evening in a disorderly and scattered manner, Labienus unexpectedly sends out all the cavalry by two gates; he gives this command and prohibition, that, when the enemy should be terrified and put to flight (which he foresaw would happen, as it did), they should all make for Indutiomarus, and no one wound any man before he should have seen him slain, because he was unwilling that he should escape, in consequence of gaining time by the delay [occasioned by the pursuit] of the rest. He offers great rewards for those who should kill him: he sends up the cohorts as a relief to the horse. The issue justifies the policy of the man, and since all aimed at one, Indutiomarus is slain, having been overtaken at the very ford of the river, and his head is carried to the camp, the horse, when returning, pursue and slay all whom they can. This affair having been known, all the forces of the Eburones and the Nervii which had assembled, depart; and for a short time after this action, Caesar was less harassed in the government of Gaul.

Caesar, expecting for many reasons a greater commotion in Gaul, resolves to hold a levy by the means of M. Silanus C. Antistius Reginus, and T. Sextius, his lieutenants: at the same time he requested Cn. Pompey, the proconsul, that since he was remaining near the city invested with military command for the interests of the commonwealth, he would command those men whom when consul [55 B.C.] he had levied by the military oath in Cisalpine Gaul, to join their respective corps, and to proceed to him; thinking it of great importance, as far as regarded the opinion which the Gauls would entertain for the future, that that the resources of Italy should appear so great that if any loss should be sustained in war, not only could it be repaired in a short time, but likewise be further supplied by still larger forces. And when Pompey had granted this to the interests of the commonwealth and the claims of friendship, Caesar having quickly completed the levy by means of his lieutenants, after three regiments had been both formed and brought to him before the winter [had] expired, and the number of those cohorts which he had lost under Q. Titurius had been doubled, taught the Gauls, both by his dispatch and by his forces what the discipline and the power of the Roman people could accomplish.

Indutiomarus having been slain, as we have stated, the government was conferred upon his relatives by the Treviri . They cease not to importune the neighboring Germans and to promise them money: when they could not obtain [their object] from those nearest them, they try those more remote. Having found some states willing to accede to their wishes, they enter into a compact with them by a mutual oath, and give hostages as a security for the money: they attach Ambiorix to them by an alliance and confederacy. Caesar, on being informed of their acts, since he saw that war was being prepared on all sides, that the Nervii, Aduatuci, and Menapii, with the addition of all the Germans on this side of the Rhine were under arms, that the Senones did not assemble according to his command, and were concerting measures with the Carnutes and the neighboring states, that the Germans were importuned by the Treviri in frequent embassies, thought that he ought to take measures for the war earlier [than usual].