History of Julius Caesar Vol. 2 of 2

In the same manner as each state was divided into two rival factions, so was the whole of Gaul (with the exception of Belgic Gaul and Helvetia) divided into two great parties,146 which exercised over the others a sort of sovereignty (principatus);147 and when, in extraordinary circumstances, the whole of Gaul acknowledged the pre-eminence of one particular state, the chief of the privileged state took the name of princeps totius Galliæ, as had been the case with the Arvernan Celtillus, the father of Vercingetorix.148

This supremacy, nevertheless, was not permanent; it passed from one nation to another, and was the object of continual ambitions and sanguinary conflicts. The Druids, it is true, had succeeded in establishing a religious centre, but there existed no political centre. In spite of certain federative ties, each state had been more engaged in the consideration of its own individuality than in that of the country in general. This egoistic carelessness of their collective interests, this jealous rivality among the different tribes, paralysed the efforts of a few eminent men who were desirous of founding a nationality, and the Gauls soon furnished the enemy with an easy means of dividing and combating them. The Emperor Napoleon I. was thus right in saying: “The principal cause of the weakness of Gaul was the spirit of isolation and locality which characterised the population; at this epoch the Gauls had no national spirit or even provincial spirit; they were governed by a spirit of town. It is the same spirit which has since forged chains for Italy. Nothing is more opposed to national spirit, to general ideas of liberty, than the particular spirit of family or of town. From this parcelling it resulted that the Gauls had no army of the line kept up and exercised; and therefore no art and no military science. Every nation which should lose sight of the importance of an army of the line perpetually on foot, and which should trust to levies or national armies, would experience the fate of the Gauls, without even having the glory of opposing the same resistance, which was the effect of the barbarism of the time and of the ground, covered with forests, marshes, and bogs, and without roads, which rendered it difficult to conquer and easy to defend.”149 Before Cæsar came into Gaul, the Ædui and the Arverni were at the head of the two contending parties, each labouring to carry the day against his rival. Soon these latter united with the Sequani, who, jealous of the superiority of the Ædui, the allies of the Roman people, invoked the support of Ariovistus and the Germans. By dint of sacrifices and promises, they had succeeded in bringing them into their territory. With this aid the Sequani had gained the victory in several combats.150 The Ædui had lost their nobility, a part of their territory, nearly all their clients, and, after giving up as hostages their children and their chiefs, they had bound themselves by oath never to attack the Sequani, who had at length obtained the supremacy of all Gaul. It was under these circumstances that Divitiacus had gone to Rome to implore the succour of the Republic, but he had failed;151 the Senate was too much engaged with intestine quarrels to assume an energetic attitude towards the Germans. The arrival of Cæsar was destined to change the face of things, and restore to the allies of Rome their old preponderance.152

CHAPTER III.

CAMPAIGN AGAINST THE HELVETII

(Year of Rome 696.)(Book I. of the “Commentaries.”)

Projects of Invasion by the Helvetii.

I. CÆSAR, as we have seen, had received from the Senate and people a command which comprised the two Gauls (Transalpine and Cisalpine) and Illyria.153 Yet the agitation which continued to reign in the Republic was retaining him at the gates of Rome, when suddenly, towards the spring of 696, news came that the Helvetii, returning to their old design, were preparing to invade the Roman province. This intelligence caused a great sensation.

The Helvetii, proud of their former exploits, confident in their strength, and incommoded by excess of population, felt humiliated at living in a country the limits of which had been made narrow by nature, and for some years they meditated quitting it to repair into the south of Gaul.

As early as 693, an ambitious chieftain, Orgetorix, found no difficulty in inspiring them with the desire to seek elsewhere a more fertile territory and a milder climate. They resolved to go and establish themselves in the country of the Santones (the Saintonge), situated on the shores of the ocean, to the north of the Gironde. Two years were to be employed in preparations, and, by a solemn engagement, the departure was fixed for the third year. But Orgetorix, sent to the neighbouring peoples to contract alliances, conspired with two influential personages – one of the country of the Sequani, the other of that of the Ædui. He induced them to undertake to seize the supreme power, promised them the assistance of the Helvetii, and persuaded them that those three powerful nations, leagued together, would easily subjugate the whole of Gaul. This conspiracy failed, through the death of Orgetorix, accused in his own country of a design to usurp the sovereignty. The Helvetii persisted, nevertheless, in their project of emigration. They collected the greatest possible number of wagons and beasts of burden; and, in order to destroy all idea of returning, they burnt their twelve towns, their four hundred hamlets, and all the wheat they could not carry with them. Each furnished himself with meal154 for three months; and after persuading their neighbours, the Rauraci,155 the Tulingi, and the Latobriges,156 to imitate their example and follow them, and having drawn to them those of the Boii who had moved from Noricum to the neighbourhood of the Rhine, they fixed the rendezvous on the banks of the Rhone for the 5th of the Calends of April (the 24th of March, the day of the equinox).157

There were only two roads by which they could leave Helvetia; one crossed the country of the Sequani, the entrance to which was defended by a narrow and difficult defile, situated between the Rhone and the Jura (the Pas-de-l’Ecluse), and where the wagons could with difficulty pass one at a time. As this defile was commanded by a very lofty mountain, a handful of men was sufficient to prevent the access. The other road, less contracted and more easy, crossed the Roman province, after having passed the Rhone, which separated the Allobroges from the Helvetii, from Lake Léman to the Jura. Within this distance the river was fordable in several places.158 At Geneva, the extreme limit of the territory of the Allobroges towards Helvetia, a bridge established a communication between the two countries. The Helvetii decided on taking the most convenient road; they reckoned, moreover, on the co-operation of this neighbouring people, who, but recently subjugated, could have but doubtful sympathies for the Romans.159

Cæsar’s Arrival at Geneva.

II. Cæsar, learning that the Helvetii intended to pass through the Roman province, left Rome hastily in the month of March, hurried by forced marches into Transalpine Gaul, and, according to Plutarch, reached Geneva in eight days.160 As he had in the province only a single legion, he ordered a levy of as many men as possible, and then destroyed the bridge of Geneva. Informed of his arrival, the Helvetii, who were probably not yet all assembled, sent their men of noblest rank to demand a passage through the country of the Allobroges, promising to commit no injury there; they had, they said, no other road to quit their country. Cæsar was inclined to refuse their demand at once, but he called to mind the defeat and death of the Consul L. Cassius; and wishing to obtain time to collect the troops of which he had ordered the levy, he gave them hopes of a favourable reply, and adjourned it to the Ides of April (8th of April). By this delay he gained a fortnight; it was employed in fortifying the left bank of the Rhone, between Lake Léman and the Jura.161 If we estimate at 5,000 men the legion which was in the province, and at 5,000 or 6,000 the number of soldiers of the new levies, we see that Cæsar had at his disposal, to defend the banks of the Rhone, about 10,000 or 11,000 infantry.162

Description of the Retrenchment of the Rhone.

III. The distance from Lake Léman to the Jura, following the sinuosities of the river, is 29½ kilomètres, or 19,000 Roman paces (millia passuum decem novem).163 It is on the space comprised between these two points that a retrenchment was raised which is called in the “Commentaries” murus fossaque. This could not be a continuous work, as the ground to be defended is intersected by rivers and ravines, and the banks of the Rhone are almost everywhere so precipitous that it would have been useless to fortify them. Cæsar, pressed for time, can only have made retrenchments on the weakest points of the line where the passage of the river was easy; indeed, this is what Dio Cassius tells us.164 The labours of the Romans were only supplementary, on certain points, to the formidable natural obstacles which the Rhone presents in the greater part of its course. The only places where an attempt could be made to pass it, because the heights there sink towards the banks of the river into practicable declivities, are situated opposite the modern villages of Russin, Cartigny, Avully, Chancy, and Cologny. In these places they cut the upper part of the slope into a perpendicular, and afterwards hollowed a trench, the scarp of which thus gained an elevation of sixteen feet. These works, by uniting the escarpments of the Rhone, formed, from Geneva to the Jura, a continuous line, which presented an impassable barrier. Behind and along this line, at certain distances, posts and closed redoubts rendered it impregnable. (See Plate 3.)165

This retrenchment, which required only from two to three days’ labour, was completed when the deputies returned, at the time appointed, to hear Cæsar’s reply. He flatly refused the passage, declaring that he would oppose it with all his means.

Meanwhile the Helvetii, and the people who took part in their enterprise, had assembled on the right bank of the Rhone. When they learnt that they must renounce the hope of quitting their country without opposition, they resolved to open themselves a passage by force. Several times – sometimes by day, and sometimes by night – they crossed the Rhone, some by fording, others with the aid of boats joined together, or of a great number of rafts of timber, and attempted to carry the heights, but, arrested by the strength of the retrenchment (operis munitione), and by the efforts and missiles of the soldiers who hastened to the threatened points (concursu et telis), they abandoned the attack.166

The Helvetii begin their March towards the Saône. Cæsar unites his Troops.

IV. The only road which now remained was that which lay across the country of the Sequani (the Pas-de-l’Ecluse); but this narrow defile could not be passed without the consent of its inhabitants. The Helvetii charged the Æduan Dumnorix, the son-in-law of Orgetorix, to solicit it for them. High in credit among the Sequani, Dumnorix obtained it; and the two peoples entered into an engagement, one to leave the passage free, the other to commit no disorder; and, as pledges of their convention, they exchanged hostages.167

When Cæsar learned that the Helvetii were preparing to pass through the lands of the Sequani and the Ædui on their way to the Santones, he resolved to oppose them, unwilling to suffer the establishment of warlike and hostile men in a fertile and open country, neighbouring upon that of the Tolosates, which made part of the Roman province.168

But, as he had not at hand sufficient forces, he resolved on uniting all the troops he could dispose of in his vast command. He entrusts, therefore, the care of the retrenchments on the Rhone to his lieutenant T. Labienus, hastens into Italy by forced marches, raises there in great haste two legions (the 11th and 12th), brings from Aquileia, a town of Illyria,169 the three legions which were there in winter quarters (the 7th, 8th, and 9th), and, at the head of his army, takes across the Alps (see Plate 4) the shortest road to Transalpine Gaul.170 The Centrones, the Graioceli, and the Caturiges (see page 24, note), posted on the heights,171 attempt to bar his road; but he overthrows them in several engagements, and from Ocelum (Usseau),172 the extreme point of the Cisalpine, reaches in seven days the territory of the Vocontii, making thus about twenty-five kilomètres a day. He next penetrates into the country of the Allobroges, then into that of the Segusiavi, who bordered on the Roman province beyond the Rhone.173

These operations took two months;174 the same time had been employed by the Helvetii in negotiating the conditions of their passage through the country of the Sequani, moving from the Rhone to the Saône, and beginning to pass the latter river. They had passed the Pas-de-l’Ecluse, followed the right bank of the Rhone as far as Culoz, then turned to the east through Virieu-le-Grand, Tenay, and Saint-Rambert, and, thence crossing the plains of Ambérieux, the river Ain, and the vast plateau of the Dombes, they had arrived at the Saône, the left bank of which they occupied from Trévoux to Villefranche. (See Plate 4.) The slowness of their march need not surprise us if we consider that an agglomeration of 368,000 individuals, men, women, and children, dragging after them from 8,000 to 9,000 wagons, through a defile where carriages could only pass one abreast, would necessarily employ several weeks in passing it.175 Cæsar, no doubt, calculated beforehand, with sufficient accuracy, the time it would take them to gain the banks of the Saône; and we may therefore suppose that, at the moment when he repaired into Italy, he hoped to bring thence his army in time to prevent them from passing that river.

He established his camp near the confluence of the Rhone and the Saône, on the heights which command Sathonay; thence he could equally manœuvre on the two banks of the Saône, take the Helvetii in flank as they marched towards that river, or prevent them, if they crossed it, from entering into the Roman province by the valley of the Rhone. It was probably at this point that Labienus joined him with the troops which had been left with him, and which raised to six the number of his legions. His cavalry, composed principally of Ædui and men raised in the Roman province, amounted to 4,000 men. During this time the Helvetii were ravaging the lands of the Ambarri, those of the Ædui, and those which the Allobroges possessed on the right bank of the Rhone. These peoples implored the succour of Cæsar. He was quite disposed to listen to their prayers.176

Defeat of the Helvetii on the Saône.

V. The Saône, which crossed the countries of the Ædui and the Sequani,177 flowed, then as now, in certain places with an extreme sluggishness. Cæsar says that people could not distinguish the direction of the current. The Helvetii, who had not learned to make bridges, crossed the river, between Trévoux and Villefranche, on rafts and boats joined together. As soon as the Roman general had ascertained by his scouts that three-quarters of the barbarians were on the other side of the river, and the others were still on his side, he left his camp towards midnight (de tertia vigilia) (see note 1 on page 69) with three legions, came upon those of the Helvetii who were still on the left bank, to the north of Trévoux, in the valley of the Formans, towards six o’clock in the morning, after a march of eighteen kilomètres, attacked them by surprise in the midst of the confusion of passing the river, and slew a great number. Those who could escape dispersed, and concealed themselves in the neighbouring forests. This disaster fell upon the Tigurini (the inhabitants of the Cantons of Vaud, Friburg, and a part of the Canton of Berne), one of the four tribes of which the nation of the Helvetii was composed, the same which, in an expedition out of Helvetia, had formerly slain the Consul L. Cassius, and made his army pass under the yoke.178

After this combat, Cæsar, in order to pursue the other part of the enemy’s army, and prevent its marching towards the south, threw a bridge across the Saône, and transported his troops to the right bank. The barques which followed him for the conveyance of provisions would necessarily facilitate this operation. It is probable that a detachment established in the defiles on the right bank of the Saône, at the spot where Lyons now stands, intercepted the road which would have conducted the Helvetii towards the Roman province. As to the three legions which remained in the camp of Sathonay, they soon rejoined Cæsar. The Helvetii, struck by his sudden approach, and by the rapidity with which he had effected, in one single day, a passage which had cost them twenty days’ labour, sent him a deputation, the chief of which, old Divico, had commanded in the wars against Cassius. In language full of boast and threatening, Divico reminded Cæsar of the humiliation inflicted formerly on the Roman arms. The proconsul replied that he was not forgetful of old affronts, but that recent injuries were sufficient motives for his conduct. Nevertheless, he offered peace, on condition that they should give him hostages. “The Helvetii,” replied Divico, “have learned from their ancestors to receive, but not to give, hostages; the Romans ought to know that.” This proud reply closed the interview.

Nevertheless, the Helvetii appear to have been desirous of avoiding battle, for next day they raised their camp, and, cut off from the possibility of following the course of the Saône to proceed towards the south, they took the easiest way to reach the country of the Santones, by directing their march towards the sources of the Dheune and the Bourbince. (See Plate 4.) This broken country, moreover, permitted them to resist the Romans with advantage. They followed across the mountains of Charolais the Gaulish road, on the trace of which was, no doubt, subsequently constructed the Roman way from Lyons to Autun, vestiges of which still exist; the latter followed the course of the Saône as far as Belleville, where it parted from it abruptly, crossing over the Col d’Avenas, proceeding through the valley of the Grosne to Cluny, and continuing by Saint-Vallier to Autun. At Saint-Vallier they would quit this road, and march towards the Loire to pass it at Decize.179

Cæsar followed the Helvetii, and sent before him all his cavalry to watch their march. These, too eager in the pursuit, came to blows with the enemy’s cavalry in a position of disadvantage, and experienced some loss. Proud of having repulsed 4,000 men with 500 horsemen, the Helvetii became sufficiently emboldened to venture sometimes to harass the Roman army. But Cæsar avoided engaging his troops; he was satisfied with following, day by day, the enemies at a distance of five or six miles at most (about eight kilomètres), opposing the devastations they committed on their passage, and waiting a favourable occasion to inflict a defeat upon them.

The two armies continued their march extremely slowly, and the days passed without offering the desired opportunity. Meanwhile, the provisionment of the Roman army began to inspire serious uneasiness; wheat arrived no longer by the Saône, for Cæsar had been obliged to move from it in order to keep up with the Helvetii. On another hand, the Ædui delayed, under vain pretexts, sending the grain which they had promised. The harvest, too, was not yet ripe, and even forage failed. As the day for distribution approached, Cæsar convoked the Æduan chiefs, who were numerous in his camp, and overwhelmed them with reproaches. One of them, Liscus, occupied in his country the supreme magistracy, under the name of vergobret; he denounced Dumnorix, the brother of Divitiacus, as opposing the sending of provisions; it was the same Dumnorix who had heretofore secretly negotiated the passage of the Helvetii across the country of the Sequani, and who, placed at the head of the Æduan contingent, had, in the last combat, by retreating with his men, led to the flight of the whole body of the cavalry. Cæsar sent for Divitiacus, a man devoted to the Roman people, and revealed to him the culpable conduct of his brother, which merited an exemplary punishment. Divitiacus expressed the same opinion, but, in tears, implored the pardon of Dumnorix. Cæsar granted it to him, and contented himself with placing him under surveillance. It was, indeed, good policy not to alienate the Æduan people by any excessive severity against a man of power among them.

The Helvetii, after advancing northward as far as Saint-Vallier, had turned to the west to reach the valley of the Loire. Arrived near Issy-l’Evêque, they encamped on the banks of a tributary of the Somme, at the foot of Mount Tauffrin, eight miles from the Roman army. Informed of this circumstance, Cæsar judged that the moment had arrived for attacking them by surprise, and sent to reconnoitre by what circuits the heights might be reached. He learnt that the access was easy, and ordered Labienus to gain, with two legions, the summit of the mountain by bye-roads, without giving alarm to the enemy, and to wait till he himself, marching at the head of the four other legions, by the same road as the Helvetii, should appear near their camp; then both were to attack them at the same time. Labienus started at midnight, taking for guides the men who had just explored the roads. Cæsar, on his part, began his march at two o’clock in the morning (de quarta vigilia),180 preceded by his cavalry. At the head of his scouts was P. Considius, whose former services under L. Sylla, and subsequently under M. Crassus, pointed him out as an experienced soldier.

At break of day Labienus occupied the heights, and Cæsar was no more than 1,500 paces from the camp of the barbarians; the latter suspected neither his approach nor that of his lieutenant. Suddenly Considius arrived at full gallop to announce that the mountain of which Labienus was to take possession was in the power of the Helvetii; he had recognised them, he said, by their arms and their military ensigns. At this news, Cæsar, fearing that he was not in sufficient force against their whole army, with only four legions, chose a strong position on a neighbouring hill, and drew up his men in order of battle. Labienus, whose orders were not to engage in battle till he saw the troops of Cæsar near the enemy’s camp, remained immovable, watching for him. It was broad daylight when Cæsar learnt that his troops had made themselves masters of the mountain, and that the Helvetii had left their camp. They escaped him thus, through the false report of Considius, who had been blinded by a groundless terror.

Admitting that the Helvetii had passed near Issy-l’Evêque, Mount Tauffrin, which rises at a distance of four kilomètres to the west of that village, answers to the conditions of the text. There is nothing to contradict the notion that Labienus and Cæsar may have, one occupied the summit, the other approached the enemy’s camp within 1,500 paces, without being perceived; and the neighbouring ground presents heights which permitted the Roman army to form in order of battle.181

Defeat of the Helvetii near Bibracte.

VI. That day the Helvetii continued their advance to Remilly, on the Alène. Since the passage of the Saône, they had marched about a fortnight, making an average of not more than eleven or twelve kilomètres a day.182 According to our reckoning, it must have been the end of the month of June. Cæsar followed the Helvetii at the usual distance, and established his camp at three miles’ distance from theirs, on the Cressonne, near Ternant.

Next day, as the Roman army had provisions left for no more than two days,183 and as, moreover, Bibracte (Mont Beuvray),184 the greatest and richest town of the Ædui, was not more than eighteen miles (twenty-seven kilomètres) distant, Cæsar, to provision his army, turned from the road which the Helvetii were following, and took that to Bibracte. (See Plate 4.) The enemy was informed of this circumstance by some deserters from the troop of L. Emilius, decurion185 of the auxiliary cavalry. Believing that the Romans were going from them through fear, and hoping to cut them off from their provisions, they turned back, and began to harass the rear-guard.