The History of Rome, Book III

Scipio meanwhile held councils of war in Massilia as to the proper mode of occupying the ferries of the Rhone, and was not induced to move even by the urgent messages that came from the leaders of the Celts. He distrusted their accounts, and he contented himself with detaching a weak Roman cavalry division to reconnoitre on the left bank of the Rhone. This detachment found the whole enemy's army already transported to that bank, and occupied in bringing over the elephants which alone remained on the right bank of the stream; and, after it had warmly engaged some Carthaginian squadrons in the district of Avignon, merely for the purpose of enabling it to complete its reconnaissance—the first encounter of the Romans and Phoenicians in this war—it hastily returned to report at head-quarters. Scipio now started in the utmost haste with all his troops for Avignon; but, when he arrived there, even the Carthaginian cavalry that had been left behind to cover the passage of the elephants had already taken its departure three days ago, and nothing remained for the consul but to return with weary troops and little credit to Massilia, and to revile the "cowardly flight" of the Punic leader. Thus the Romans had for the third time through pure negligence abandoned their allies and an important line of defence; and not only so, but by passing after this first blunder from mistaken slackness to mistaken haste, and by still attempting without any prospect of success to do what might have been done with so much certainty a few days before, they let the real means of repairing their error pass out of their hands. When once Hannibal was in the Celtic territory on the Roman side of the Rhone, he could no longer be prevented from reaching the Alps; but if Scipio had at the first accounts proceeded with his whole army to Italy—the Po might have been reached by way of Genoa in seven days—and had united with his corps the weak divisions in the valley of the Po, he might have at least prepared a formidable reception for the enemy. But not only did he lose precious time in the march to Avignon, but, capable as otherwise he was, he wanted either the political courage or the military sagacity to change the destination of his corps as the change of circumstances required. He sent the main body under his brother Gnaeus to Spain, and returned himself with a few men to Pisae.

Hannibal's Passage of the Alps

Hannibal, who after the passage of the Rhone had in a great assembly of the army explained to his troops the object of his expedition, and had brought forward the Celtic chief Magilus himself, who had arrived from the valley of the Po, to address the army through an interpreter, meanwhile continued his march to the passes of the Alps without obstruction. Which of these passes he should choose, could not be at once determined either by the shortness of the route or by the disposition of the inhabitants, although he had no time to lose either in circuitous routes or in combat. He had necessarily to select a route which should be practicable for his baggage, his numerous cavalry, and his elephants, and in which an army could procure sufficient means of subsistence either by friendship or by force; for, although Hannibal had made preparations to convey provisions after him on beasts of burden, these could only meet for a few days the wants of an army which still, notwithstanding its great losses, amounted to nearly 50,000 men. Leaving out of view the coast route, which Hannibal abstained from taking not because the Romans barred it, but because it would have led him away from his destination, there were only two routes of note leading across the Alps from Gaul to Italy in ancient times:37 the pass of the Cottian Alps (Mont Genevre) leading into the territory of the Taurini (by Susa or Fenestrelles to Turin), and that of the Graian Alps (the Little St. Bernard) leading into the territory of the Salassi (to Aosta and Ivrea). The former route is the shorter; but, after leaving the valley of the Rhone, it passes by the impracticable and unfruitful river-valleys of the Drac, the Romanche, and the upper Durance, through a difficult and poor mountain country, and requires at least a seven or eight days' mountain march. A military road was first constructed there by Pompeius, to furnish a shorter communication between the provinces of Cisalpine and Transalpine Gaul.

The route by the Little St. Bernard is somewhat longer; but after crossing the first Alpine wall that forms the eastern boundary of the Rhone valley, it keeps by the valley of the upper Isere, which stretches from Grenoble by way of Chambery up to the very foot of the Little St. Bernard or, in other words, of the chain of the higher Alps, and is the broadest, most fertile and most populous of all the Alpine valleys. Moreover, the pass of the Little St. Bernard, while not the lowest of all the natural passes of the Alps, is by far the easiest; although no artificial road was constructed there, an Austrian corps with artillery crossed the Alps by that route in 1815. And lastly this route, which only leads over two mountain ridges, has been from the earliest times the great military route from the Celtic to the Italian territory. The Carthaginian army had thus in fact no choice. It was a fortunate coincidence, but not a motive influencing the decision of Hannibal, that the Celtic tribes allied with him in Italy inhabited the country up to the Little St. Bernard, while the route by Mont Genevre would have brought him at first into the territory of the Taurini, who were from ancient times at feud with the Insubres.

So the Carthaginian army marched in the first instance up the Rhone towards the valley of the upper Isere, not, as might be presumed, by the nearest route up the left bank of the lower Isere from Valence to Grenoble, but through the "island" of the Allobroges, the rich, and even then thickly peopled, low ground, which is enclosed on the north and west by the Rhone, on the south by the Isere, and on the east by the Alps. The reason of this movement was, that the nearest route would have led them through an impracticable and poor mountain- country, while the "island" was level and extremely fertile, and was separated by but a single mountain-wall from the valley of the upper Isere. The march along the Rhone into, and across, the "island" to the foot of the Alpine wall was accomplished in sixteen days: it presented little difficulty, and in the "island" itself Hannibal dexterously availed himself of a feud that had broken out between two chieftains of the Allobroges to attach to his interests one of the most important of the chiefs, who not only escorted the Carthaginians through the whole plain, but also supplied them with provisions, and furnished the soldiers with arms, clothing, and shoes. But the expedition narrowly escaped destruction at the crossing of the first Alpine chain, which rises precipitously like a wall, and over which only a single available path leads (over the Mont du Chat, near the hamlet Chevelu). The population of the Allobroges had strongly occupied the pass. Hannibal learned the state of matters early enough to avoid a surprise, and encamped at the foot, until after sunset the Celts dispersed to the houses of the nearest town; he then seized the pass in the night Thus the summit was gained; but on the extremely steep path, which leads down from the summit to the lake of Bourget, the mules and horses slipped and fell. The assaults, which at suitable points were made by the Celts upon the army in march, were very annoying, not so much of themselves as by reason of the turmoil which they occasioned; and when Hannibal with his light troops threw himself from above on the Allobroges, these were chased doubtless without difficulty and with heavy loss down the mountain, but the confusion, in the train especially, was further increased by the noise of the combat. So, when after much loss he arrived in the plain, Hannibal immediately attacked the nearest town, to chastise and terrify the barbarians, and at the same time to repair as far as possible his loss in sumpter animals and horses. After a day's repose in the pleasant valley of Chambery the army continued its march up the Isere, without being detained either by want of supplies or by attacks so long as the valley continued broad and fertile. It was only when on the fourth day they entered the territory of the Ceutrones (the modern Tarantaise) where the valley gradually contracts, that they had again greater occasion to be on their guard. The Ceutrones received the army at the boundary of their country (somewhere about Conflans) with branches and garlands, furnished cattle for slaughter, guides, and hostages; and the Carthaginians marched through their territory as through a friendly land. When, however, the troops had reached the very foot of the Alps, at the point where the path leaves the Isere, and winds by a narrow and difficult defile along the brook Reclus up to the summit of the St. Bernard, all at once the militia of the Ceutrones appeared partly in the rear of the army, partly on the crests of the rocks enclosing the pass on the right and left, in the hope of cutting off the train and baggage. But Hannibal, whose unerring tact had seen in all those advances made by the Ceutrones nothing but the design of procuring at once immunity for their territory and a rich spoil, had in expectation of such an attack sent forward the baggage and cavalry, and covered the march with all his infantry. By this means he frustrated the design of the enemy, although he could not prevent them from moving along the mountain slopes parallel to the march of the infantry, and inflicting very considerable loss by hurling or rolling down stones. At the "white stone" (still called -la roche blanche-), a high isolated chalk cliff standing at the foot of the St. Bernard and commanding the ascent to it, Hannibal encamped with his infantry, to cover the march of the horses and sumpter animals laboriously climbing upward throughout the whole night; and amidst continual and very bloody conflicts he at length on the following day reached the summit of the pass. There, on the sheltered table-land which spreads to the extent of two and a half miles round a little lake, the source of the Doria, he allowed the army to rest. Despondency had begun to seize the minds of the soldiers. The paths that were becoming ever more difficult, the provisions failing, the marching through defiles exposed to the constant attacks of foes whom they could not reach, the sorely thinned ranks, the hopeless situation of the stragglers and the wounded, the object which appeared chimerical to all save the enthusiastic leader and his immediate staff—all these things began to tell even on the African and Spanish veterans. But the confidence of the general remained ever the same; numerous stragglers rejoined the ranks; the friendly Gauls were near; the watershed was reached, and the view of the descending path, so gladdening to the mountain-pilgrim, opened up: after a brief repose they prepared with renewed courage for the last and most difficult undertaking, —the downward march. In it the army was not materially annoyed by the enemy; but the advanced season—it was already the beginning of September—occasioned troubles in the descent, equal to those which had been occasioned in the ascent by the attacks of the adjoining tribes. On the steep and slippery mountain- slope along the Doria, where the recently-fallen snow had concealed and obliterated the paths, men and animals went astray and slipped, and were precipitated into the chasms. In fact, towards the end of the first day's march they reached a portion of the path about 200 paces in length, on which avalanches are constantly descending from the precipices of the Cramont that overhang it, and where in cold summers snow lies throughout the year. The infantry passed over; but the horses and elephants were unable to cross the smooth masses of ice, on which there lay but a thin covering of freshly-fallen snow, and the general encamped above the difficult spot with the baggage, the cavalry, and the elephants. On the following day the horsemen, by zealous exertion in entrenching, prepared a path for horses and beasts of burden; but it was not until after a further labour of three days with constant reliefs, that the half-famished elephants could at length be conducted over. In this way the whole army was after a delay of four days once more united; and after a further three days' march through the valley of the Doria, which was ever widening and displaying greater fertility, and whose inhabitants the Salassi, clients of the Insubres, hailed in the Carthaginians their allies and deliverers, the army arrived about the middle of September in the plain of Ivrea, where the exhausted troops were quartered in the villages, that by good nourishment and a fortnight's repose they might recruit from their unparalleled hardships. Had the Romans placed a corps, as they might have done, of 30,000 men thoroughly fresh and ready for action somewhere near Turin, and immediately forced on a battle, the prospects of Hannibal's great plan would have been very dubious; fortunately for him, once more, they were not where they should have been, and they did not disturb the troops of the enemy in the repose which was so greatly needed.38

Results

The object was attained, but at a heavy cost. Of the 50,000 veteran infantry and the 9000 cavalry, which the army had numbered at the crossing of the Pyrenees, more than half had been sacrificed in the conflicts, the marches, and the passages of the rivers. Hannibal now, according to his own statement, numbered not more than 20,000 infantry—of whom three-fifths were Libyans and two-fifths Spaniards—and 6000 cavalry, part of them doubtless dismounted: the comparatively small loss of the latter proclaimed the excellence of the Numidian cavalry no less than the consideration of the general in making a sparing use of troops so select. A march of 526 miles or about 33 moderate days' marching—the continuance and termination of which were disturbed by no special misfortunes on a great scale that could not be anticipated, but were, on the other hand, rendered possible only by incalculable pieces of good fortune and still more incalculable blunders of the enemy, and which yet not only cost such sacrifices, but so fatigued and demoralized the army, that it needed a prolonged rest in order to be again ready for action—is a military operation of doubtful value, and it may be questioned whether Hannibal himself regarded it as successful. Only in so speaking we may not pronounce an absolute censure on the general: we see well the defects of the plan of operations pursued by him, but we cannot determine whether he was in a position to foresee them—his route lay through an unknown land of barbarians—or whether any other plan, such as that of taking the coast road or of embarking at Cartagena or at Carthage, would have exposed him to fewer dangers. The cautious and masterly execution of the plan in its details at any rate deserves our admiration, and to whatever causes the result may have been due —whether it was due mainly to the favour of fortune, or mainly to the skill of the general—the grand idea of Hamilcar, that of taking up the conflict with Rome in Italy, was now realized. It was his genius that projected this expedition; and as the task of Stein and Scharnhorst was more difficult and nobler than that of York and Blucher, so the unerring tact of historical tradition has always dwelt on the last link in the great chain of preparatory steps, the passage of the Alps, with a greater admiration than on the battles of the Trasimene lake and of the plain of Cannae.

Chapter V

The War under Hannibal to the Battle of Cannae

Hannibal and the Italian Celts

The appearance of the Carthaginian army on the Roman side of the Alps changed all at once the situation of affairs, and disconcerted the Roman plan of war. Of the two principal armies of the Romans, one had landed in Spain and was already engaged with the enemy there: it was no longer possible to recall it. The second, which was destined for Africa under the command of the consul Tiberius Sempronius, was fortunately still in Sicily: in this instance Roman delay for once proved useful. Of the two Carthaginian squadrons destined for Italy and Sicily, the first was dispersed by a storm, and some of its vessels were captured by the Syracusans near Messana; the second had endeavoured in vain to surprise Lilybaeum, and had thereafter been defeated in a naval engagement off that port. But the continuance of the enemy's squadrons in the Italian waters was so inconvenient, that the consul determined, before crossing to Africa, to occupy the small islands around Sicily, and to drive away the Carthaginian fleet operating against Italy. The summer passed away in the conquest of Melita, in the chase after the enemy's squadron, which he expected to find at the Lipari islands while it had made a descent near Vibo (Monteleone) and pillaged the Bruttian coast, and, lastly, in gaining information as to a suitable spot for landing on the coast of Africa; so that the army and fleet were still at Lilybaeum, when orders arrived from the senate that they should return with all possible speed for the defence of their homes.

In this way, while the two great Roman armies, each in itself equal in numbers to that of Hannibal, remained at a great distance from the valley of the Po, the Romans were quite unprepared for an attack in that quarter. No doubt a Roman army was there, in consequence of an insurrection that had broken out among the Celts even before the arrival of the Carthaginian army. The founding of the two Roman strongholds of Placentia and Cremona, each of which received 6000 colonists, and more especially the preparations for the founding of Mutina in the territory of the Boii, had already in the spring of 536 driven the Boii to revolt before the time concerted with Hannibal; and the Insubres had immediately joined them. The colonists already settled in the territory of Mutina, suddenly attacked, took refuge in the town. The praetor Lucius Manlius, who held the chief command at Ariminum, hastened with his single legion to relieve the blockaded colonists; but he was surprised in the woods, and no course was left to him after sustaining great loss but to establish himself upon a hill and to submit to a siege there on the part of the Boii, till a second legion sent from Rome under the praetor Lucius Atilius succeeded in relieving army and town, and in suppressing for the moment the Gaulish insurrection. This premature rising of the Boii on the one hand, by delaying the departure of Scipio for Spain, essentially promoted the plans of Hannibal; on the other hand, but for its occurrence he would have found the valley of the Po entirely unoccupied, except the fortresses. But the Roman corps, whose two severely thinned legions did not number 20,000 soldiers, had enough to do to keep the Celts in check, and did not think of occupying the passes of the Alps. The Romans only learned that the passes were threatened, when in August the consul Publius Scipio returned without his army from Massilia to Italy, and perhaps even then they gave little heed to the matter, because, forsooth, the foolhardy attempt would be frustrated by the Alps alone. Thus at the decisive hour and on the decisive spot there was not even a Roman outpost. Hannibal had full time to rest his army, to capture after a three days' siege the capital of the Taurini which closed its gates against him, and to induce or terrify into alliance with him all the Ligurian and Celtic communities in the upper basin of the Po, before Scipio, who had taken the command in the Po valley, encountered him.

Scipio in the Valley of the Po

Conflict on the Ticino

The Armies at Placentia

Scipio, who, with an army considerably smaller and very weak in cavalry, had the difficult task of preventing the advance of the superior force of the enemy and of repressing the movements of insurrection which everywhere were spreading among the Celts, had crossed the Po presumably at Placentia, and marched up the river to meet the enemy, while Hannibal after the capture of Turin marched downwards to relieve the Insubres and Boii. In the plain between the Ticino and the Sesia, not far from Vercelli, the Roman cavalry, which had advanced with the light infantry to make a reconnaissance in force, encountered the Punic cavalry sent out for the like purpose, both led by the generals in person. Scipio accepted battle when offered, notwithstanding the superiority of the enemy; but his light infantry, which was placed in front of the cavalry, dispersed before the charge of the heavy cavalry of the enemy, and while the latter engaged the masses of the Roman horsemen in front, the light Numidian cavalry, after having pushed aside the broken ranks of the enemy's infantry, took the Roman horsemen in flank and rear. This decided the combat. The loss of the Romans was very considerable. The consul himself, who made up as a soldier for his deficiencies as a general, received a dangerous wound, and owed his safety entirely to the devotion of his son of seventeen, who, courageously dashing into the ranks of the enemy, compelled his squadron to follow him and rescued his father. Scipio, enlightened by this combat as to the strength of the enemy, saw the error which he had committed in posting himself, with a weaker army, in the plain with his back to the river, and resolved to return to the right bank of the Po under the eyes of his antagonist. As the operations became contracted into a narrower space and his illusions regarding Roman invincibility departed, he recovered the use of his considerable military talents, which the adventurous boldness of his youthful opponent's plans had for a moment paralyzed. While Hannibal was preparing for a pitched battle, Scipio by a rapidly projected and steadily executed march succeeded in reaching the right bank of the river which in an evil hour he had abandoned, and broke down the bridge over the Po behind his army; the Roman detachment of 600 men charged to cover the process of destruction were, however, intercepted and made prisoners. But as the upper course of the river was in the hands of Hannibal, he could not be prevented from marching up the stream, crossing on a bridge of boats, and in a few days confronting the Roman army on the right bank. The latter had taken a position in the plain in front of Placentia; but the mutiny of a Celtic division in the Roman camp, and the Gallic insurrection breaking out afresh all around, compelled the consul to evacuate the plain and to post himself on the hills behind the Trebia. This was accomplished without notable loss, because the Numidian horsemen sent in pursuit lost their time in plundering, and setting fire to, the abandoned camp. In this strong position, with his left wing resting on the Apennines, his right on the Po and the fortress of Placentia, and covered in front by the Trebia—no inconsiderable stream at that season—Scipio was unable to save the rich stores of Clastidium (Casteggio) from which in this position he was cut off by the army of the enemy; nor was he able to avert the insurrectionary movement on the part of almost all the Gallic cantons, excepting the Cenomani who were friendly to Rome; but he completely checked the progress of Hannibal, and compelled him to pitch his camp opposite to that of the Romans. Moreover, the position taken up by Scipio, and the circumstance of the Cenomani threatening the borders of the Insubres, hindered the main body of the Gallic insurgents from directly joining the enemy, and gave to the second Roman army, which meanwhile had arrived at Ariminum from Lilybaeum, the opportunity of reaching Placentia through the midst of the insurgent country without material hindrance, and of uniting itself with the army of the Po.

Battle on the Trebia

Scipio had thus solved his difficult task completely and brilliantly. The Roman army, now close on 40,000 strong, and though not a match for its antagonist in cavalry, at least equal in infantry, had simply to remain in its existing position, in order to compel the enemy either to attempt in the winter season the passage of the river and an attack upon the camp, or to suspend his advance and to test the fickle temper of the Gauls by the burden of winter quarters. Clear, however, as this was, it was no less clear that it was now December, and that under the course proposed the victory might perhaps be gained by Rome, but would not be gained by the consul Tiberius Sempronius, who held the sole command in consequence of Scipio's wound, and whose year of office expired in a few months. Hannibal knew the man, and neglected no means of alluring him to fight. The Celtic villages that had remained faithful to the Romans were cruelly laid waste, and, when this brought on a conflict between the cavalry, Hannibal allowed his opponents to boast of the victory. Soon thereafter on a raw rainy day a general engagement came on, unlocked for by the Romans. From the earliest hour of the morning the Roman light troops had been skirmishing with the light cavalry of the enemy; the latter slowly retreated, and the Romans eagerly pursued it through the deeply swollen Trebia to follow up the advantage which they had gained. Suddenly the cavalry halted; the Roman vanguard found itself face to face with the army of Hannibal drawn up for battle on a field chosen by himself; it was lost, unless the main body should cross the stream with all speed to its support. Hungry, weary, and wet, the Romans came on and hastened to form in order of battle, the cavalry, as usual, on the wings, the infantry in the centre. The light troops, who formed the vanguard on both sides, began the combat: but the Romans had already almost exhausted their missiles against the cavalry, and immediately gave way. In like manner the cavalry gave way on the wings, hard pressed by the elephants in front, and outflanked right and left by the far more numerous Carthaginian horse. But the Roman infantry proved itself worthy of its name: at the beginning of the battle it fought with very decided superiority against the infantry of the enemy, and even when the repulse of the Roman horse allowed the enemy's cavalry and light-armed troops to turn their attacks against the Roman infantry, the latter, although ceasing to advance, obstinately maintained its ground. At this stage a select Carthaginian band of 1000 infantry, and as many horsemen, under the leadership of Mago, Hannibal's youngest brother, suddenly emerged from an ambush in the rear of the Roman army, and fell upon the densely entangled masses. The wings of the army and the rear ranks of the Roman centre were broken up and scattered by this attack, while the first division, 10,000 men strong, in compact array broke through the Carthaginian line, and made a passage for itself obliquely through the midst of the enemy, inflicting great loss on the opposing infantry and more especially on the Gallic insurgents. This brave body, pursued but feebly, thus reached Placentia. The remaining mass was for the most part slaughtered by the elephants and light troops of the enemy in attempting to cross the river: only part of the cavalry and some divisions of infantry were able, by wading through the river, to gain the camp whither the Carthaginians did not follow them, and thus they too reached Placentia.39 Few battles confer more honour on the Roman soldier than this on the Trebia, and few at the same time furnish graver impeachment of the general in command; although the candid judge will not forget that a commandership in chief expiring on a definite day was an unmilitary institution, and that figs cannot be reaped from thistles. The victory came to be costly even to the victors. Although the loss in the battle fell chiefly on the Celtic insurgents, yet a multitude of the veteran soldiers of Hannibal died afterwards from diseases engendered by that raw and wet winter day, and all the elephants perished except one.