The History of Rome, Theodor Mommsen [good english books to read txt] 📗

Marcus Varro indeed was simply a celebrated scholar and a faithful partisan; but Lucius Afranius had fought with distinction in the east and in the Alps, and Marcus Petreius, the conqueror of Catilina, was an officer as dauntless as he was able. While in the Further province Caesar had still various adherents from the time of his governorship there,(18) the more important province of the Ebrowas attached by all the ties of veneration and gratitude to the celebrated general, who twenty years before had held the command in it during the Sertorian war, and after the termination of that war had organized it anew. Pompeius could evidently after the Italian disaster do nothing better than proceed to Spain with the saved remnant of his army, and then at the head of his whole force advance to meet Caesar. But unfortunately he had, in the hope of being able still to save the troops that were in Corfinium, tarried in Apuli so long that he was compelled to choose the nearer Brundisium as his place of embarkation instead of the Campanian ports. Why, master as he was of the sea and Sicily, he did not subsequently revert to his original plan, cannot be determined; whether it was that perhaps the aristocracy after their short-sighted and distrustful fashion showed no desire to entrust themselves to the Spanish troops and the Spanish population, it is enough to say that Pompeius remained in the east, and Caesar had the option of directing his first attack either against the army which was being organized in Greece under Pompeius' own command, or against that which was ready for battle under his lieutenants in Spain. He had decided in favour of the latter course, and, as soon as the Italian campaign ended, had taken measures to collect on the lower Rhone nine of his best legions, as also 6000 cavalry— partly men individually picked out by Caesar in the Celtic cantons, partly German mercenaries—and a number of Iberian and Ligurian archers.

Massilia against Caesar

But at this point his opponents also had been active. Lucius Domitius, who was nominated by the senate in Caesar's stead as governor of Transalpine Gaul, had proceeded from Corfinium—as soon as Caesar had released him—along with his attendants and with Pompeius' confidant Lucius Vibullius Rufus to Massilia, and actually induced that city to declare for Pompeius and even to refuse a passage to Caesar's troops. Of the Spanish troops the two least trustworthy legions were left behind under the command of Varro in the Further province; while the five best, reinforced by 40,000 Spanish infantry— partly Celtiberian infantry of the line, partly Lusitanian and other light troops—and by 5000 Spanish cavalry, under Afranius and Petreius, had, in accordance with the orders of Pompeius transmitted by Vibullius, set out to close the Pyrenees against the enemy.

Caesar Occupies the Pyrenees
Position at Ilerda

Meanwhile Caesar himself arrived in Gaul and, as the commencement of the siege of Massilia still detained him in person, he immediately despatched the greater part of his troops assembled on the Rhone—six legions and the cavalry—along the great road leading by way of Narbo (Narbonne) to Rhode (Rosas) with the view of anticipating the enemy at the Pyrenees. The movement was successful; when Afranius and Petreius arrived at the passes, they found them already occupied by the Caesarians and the line of the Pyrenees lost. They then took up a position at Ilerda (Lerida) between the Pyrenees and the Ebro. This town lies twenty miles to the north of the Ebro on the right bank of one of its tributaries, the Sicoris (Segre), which was crossed by only a single solid bridge immediately at Ilerda. To the south of Ilerda the mountains which adjoin the left bank of the Ebro approach pretty close to the town; to the northward there stretches on both sides of the Sicoris a level country which is commanded by the hill on which the town is built. For an army, which had to submit to a siege, it was an excellent position; but the defence of Spain, after the occupation of the line of the Pyrenees had been neglected, could only be undertaken in earnest behind the Ebro, and, as no secure communication was established between Ilerda and the Ebro, and no bridge existed over the latter stream, the retreat from the temporary to the true defensive position was not sufficiently secured. The Caesarians established themselves above Ilerda, in the delta which the river Sicoris forms with the Cinga (Cinca), which unites with it below Ilerda; but the attack only began in earnest after Caesar had arrived in the camp (23 June). Under the walls of the town the struggle was maintained with equal exasperation and equal valour on both sides, and with frequent alternations of success; but the Caesarians did not attain their object— which was, to establish themselves between the Pompeian camp and the town and thereby to possess themselves of the stone bridge— and they consequently remained dependent for their communication with Gaul solely on two bridges which they had hastily constructed over the Sicoris, and that indeed, as the river at Ilerda itself was too considerable to be bridged over, about eighteen or twenty miles farther up.

Caesar Cut Off

When the floods came on with the melting of the snow, these temporary bridges were swept away; and, as they had no vessels for the passage of the highly swollen rivers and under such circumstance the restoration of the bridges could not for the present be thought of, the Caesarian army was confined to the narrow space between the Cinca and the Sicoris, while the left bank of the Sicoris and with it the road, by which the army communicated with Gaul and Italy, were exposed almost undefended to the Pompeians, who passed the river partly by the town-bridge, partly by swimming after the Lusitanian fashion on skins. It was the season shortly before harvest; the old produce was almost used up, the new was not yet gathered, and the narrow stripe of land between the two streams was soon exhausted. In the camp actual famine prevailed—the -modius- of wheat cost 50 -denarii- (1 pound 16 shillings)—and dangerous diseases broke out; whereas on the left bank there were accumulated provisions and varied supplies, as well as troops of all sorts—reinforcements from Gaul of cavalry and archers, officers and soldiers from furlough, foraging parties returning—in all a mass of 6000 men, whom the Pompeians attacked with superior force and drove with great loss to the mountains, while the Caesarians on the right bank were obliged to remain passive spectators of the unequal conflict. The communications of the army were in the hands of the Pompeians; in Italy the accounts from Spain suddenly ceased, and the suspicious rumours, which began to circulate there, were not so very remote from the truth. Had the Pompeians followed up their advantage with some energy, they could not have failed either to reduce under their power or at least to drive back towards Gaul the mass scarcely capable of resistance which was crowded together on the left bank of the Sicoris, and to occupy this bank so completely that not a man could cross the river without their knowledge. But both points were neglected; those bands were doubtless pushed aside with loss but neither destroyed nor completely beaten back, and the prevention of the crossing of the river was left substantially to the river itself,

Caesar Re-establishes the Communications

Thereupon Caesar formed his plan. He ordered portable boats of a light wooden frame and osier work lined with leather, after the model of those used in the Channel among the Britons and subsequently by the Saxons, to be prepared in the camp and transported in waggons to the point where the bridges had stood. On these frail barks the other bank was reached and, as it was found unoccupied, the bridge was re-established without much difficulty; the road in connection with it was thereupon quickly cleared, and the eagerly-expected supplies were conveyed to the camp. Caesar's happy idea thus rescued the army from the immense peril in which it was placed. Then the cavalry of Caesar which in efficiency far surpassed that of the enemy began at once to scour the country on the left bank of the Sicoris; the most considerable Spanish communities between the Pyrenees and the Ebro—Osca, Tarraco, Dertosa, and others—nay, even several to the south of the Ebro, passed over to Caesar's side.

Retreat of the Pompeians from Ilerda

The supplies of the Pompeians were now rendered scarce through the foraging parties of Caesar and the defection of the neighbouring communities; they resolved at length to retire behind the line of the Ebro, and set themselves in all haste to form a bridge of boats over the Ebro below the mouth of the Sicoris. Caesar sought to cut off the retreat of his opponents over the Ebro and to detain them in Ilerda; but so long as the enemy remained in possession of the bridge at Ilerda and he had control of neither ford nor bridge there, he could not distribute his army over both banks of the river and could not invest Ilerda. His soldiers therefore worked day and night to lower the depth of the river by means of canals drawing off the water, so that the infantry could wade through it. But the preparations of the Pompeians to pass the Ebro were sooner finished than the arrangements of the Caesarians for investing Ilerda; when the former after finishing the bridge of boats began their march towards the Ebro along the left bank of the Sicoris, the canals of the Caesarians seemed to the general not yet far enough advanced to make the ford available for the infantry; he ordered only his cavalry to pass the stream and, by clinging to the rear of the enemy, at least to detain and harass them.

Caesar Follows

But when Caesar's legions saw in the gray morning the enemy's columns which had been retiring since midnight, they discerned with the sure instinct of experienced veterans the strategic importance of this retreat, which would compel them to follow their antagonists into distant and impracticable regions filled by hostile troops; at their own request the general ventured to lead the infantry also into the river, and although the water reached up to the shoulders of the men, it was crossed without accident. It was high time. If the narrow plain, which separated the town of Ilerda from the mountains enclosing the Ebro were once traversed and the army of the Pompeians entered the mountains, their retreat to the Ebro could no longer be prevented. Already they had, notwithstanding the constant attacks of the enemy's cavalry which greatly delayed their march, approached within five miles of the mountains, when they, having been on the march since midnight and unspeakably exhausted, abandoned their original plan of traversing the whole plain on the same day, and pitched their camp. Here the infantry of Caesar overtook them and encamped opposite to them in the evening and during the night, as the nocturnal march which the Pompeians had at first contemplated was abandoned from fear of the night-attacks of the cavalry. On the following day also both armies remained immoveable, occupied only in reconnoitering the country.

The Route to the Ebro Closed

Early in the morning of the third day Caesar's infantry set out, that by a movement through the pathless mountains alongside of the road they might turn the position of the enemy and bar their route to the Ebro. The object of the strange march, which seemed at first to turn back towards the camp before Ilerda, was not at once perceived by the Pompeian officers. When they discerned it, they sacrificed camp and baggage and advanced by a forced march along the highway, to gain the crest of the ridge before the Caesarians. But it was already too late; when they came up, the compact masses of the enemy were already posted on the highway itself. a desperate attempt of the Pompeians to discover other routes to the Ebro over the steep mountains was frustrated by Caesar's cavalry, which surrounded and cut to pieces the Lusitanian troops sent forth for that purpose. Had a battle taken place between the Pompeian army— which had the enemy's cavalry in its rear and their infantry in front, and was utterly demoralized—and the Caesarians, the issue was scarcely doubtful, and the opportunity for fighting several times presented itself; but Caesar made no use of it, and, not without difficulty, restrained the impatient eagerness for the combat in his soldiers sure of victory. The Pompeian army was at any rate strategically lost; Caesar avoided weakening his army and still further envenoming the bitter feud by useless bloodshed. On the very day after he had succeeded in cutting off the Pompeians from the Ebro,