St. Cyr could make out very little of his adversaries’ force or position; the woods and hills masked the greater part of the Spanish line. But he knew that he must attack, and that promptly, for every hour that he delayed would give time for Lazan to come up in his rear, and Milans on his left flank. He left behind him at the southern outlet of the Trentapassos the three battalions of Chabot’s division, with orders to hold the defile at all costs against Lazan, whenever the latter should appear. With the other twenty-three battalions forming the divisions of Pino and Souham he marched down the high-road to deal with Vives. It was necessary to attack at once: ‘the biscuit distributed at La Bispal was just finished: the cartridges were running low, for many had been spent in the preceding skirmishes. There was, in fact, only ammunition for one hour of battle[70].’ St. Cyr saw that he must win by one short and swift stroke, or suffer a complete disaster. Accordingly, he had resolved to form his two strong divisions—more than 13,000 men—into one great column, which was to charge the Spanish centre and burst through by its own impetus and momentum. Pino’s thirteen Italian battalions formed the head of the mass: Souham’s ten French battalions its rear. The General’s plan is best expressed in his own words: his orders to Pino, who was to lead the attack, ran as follows:—
‘The corps must fight in the order in which I have arranged it this morning. There is neither time nor means to make dispositions to beat the Spaniards more or less thoroughly. The country-side is so broken and wooded that it would take three hours to reconnoitre their position, and in two hours Lazan may be on the spot attacking our rear. Not a minute can be lost: we must simply rush at and trample down[71] the corps in our front, whatever its strength may be. Our food is done, our ammunition almost exhausted. The enemy has artillery, which is a reason the more for haste: the quicker we attack, the less time will he have to shell us. There must be no attempt to feel his position; not one battalion must be deployed. Though his position is strong we must go straight at it in column, and burst through the centre by striking at that one point with our whole force. The enemy must be given no time to prepare his defence or bring up his reserves. You must not change the disposition in column in which we march, even in order to take great numbers of prisoners. Our sole end is to break through and to get as close as we can to Barcelona this evening. Our camp-fires must be visible to the garrison by night, to show that we are at hand to raise the siege.’
This order of battle was most hazardous: if St. Cyr had found in front of him two steady English divisions instead of Reding’s raw Granadan levies and the gallant but untrained Catalan miqueletes, it is certain that affairs would have gone as at Busaco or Talavera. Dense columns attacking a fair position held by good troops in line are bound to suffer terrible losses, and ought never to succeed. But St. Cyr knew the enemies with whom he had to deal, and his method was well adapted to his end. If he ran some risk of failing at the commencement of the action, it was simply because his subordinates did not follow out his directions.
General Pino, on whom the responsibility of opening the attack devolved, started with every intention of obedience. But when he arrived at the foot of the Spanish position, and the balls began to fall thickly among his leading battalions, he lost his head. His column only faced the Spanish right centre, and the heavy flanking fire from the hostile wings daunted him. Instead of pushing straight before him with his whole force, as St. Cyr had ordered, he threw out five battalions of Mazzuchelli’s brigade to his left[72], and two battalions under General Fontane to his extreme right[73]; the six battalions of his rear brigade were not yet up to the front, and took no part in the first assault. Thus he attacked on a front of three-quarters of a mile, instead of at one single point. His columns, after driving in the Spanish front line, came to a stand half-way up the hill, in a very irregular array, the flanks thrown forward, the centre hanging somewhat back. Reding, against whom the main attack of Mazzuchelli’s brigade had been directed, brought up his second line, and when the Italians were slackening in their advance hurled at them two squadrons of hussars, and led forward his whole division. The assailants broke, and fell back with loss.
St. Cyr, coming up to the front at this moment, was horrified to mark the results of Pino’s disobedience of his orders. But he had still Souham’s division in hand, and flung it, in one solid mass of ten battalions, upon Reding’s right; at the same time he commanded Pino to throw the two regiments of his intact rear brigade upon the Spanish centre[74], while Fontane’s two battalions continued to demonstrate against the enemy’s left. The result was what might have been expected: the column of Souham burst through the Granadan division, and completely routed the right wing of the Spanish army: at the same moment Pino’s main column forced back Vives and the Catalans along the line of the high-road. All at once fell into confusion, and, when St. Cyr bade his two Italian cavalry regiments charge up the chaussée, the enemy broke his ranks and fled to the hills. Five of the seven Spanish guns were captured, with two standards and some 1,500 unwounded prisoners. Reding, who stayed behind to the last, trying to rally a rearguard for the protection of the routed host, was nearly taken prisoner, and had to draw his sword and cut his way out. Vives, whose conduct on this day was anything but creditable, scrambled up a cliff after turning his horse loose, and came almost alone to the sea-shore near Mongat, where he was picked up by the boats of the Cambrian frigate, and forwarded to Tarragona. Besides the prisoners the Spaniards lost at least a thousand men, and many of the miqueletes dispersed to their homes. St. Cyr acknowledged 600 casualties, nearly all of them, as might have been expected, in Pino’s division.
Reding at last succeeded in rallying some troops at Monmalo near San Culgat, and covered the retreat of the main mass of the fugitives to join the troops who had been left in the lines before Barcelona. As to the detached Spanish corps under Milans and the Marquis of Lazan, the former never came down from the hills till the fighting was over, though it was only four or five miles from the scene of action[75]. The latter, which was following in St. Cyr’s rear, moved with such extreme slowness that it had not yet reached San Celoni when the battle was fought, and did not even get into contact with Chabot’s division, which had been left behind to guard against its approach[76]. On learning of the defeat the Marquis marched back to Gerona, and rejoined Alvarez. Thus Vives got no assistance whatever from his outlying corps: if Lazan is to be trusted, this was largely the fault of the Commander-in-chief himself, for no dispatch from him reached his subordinates after December 14, and they had no knowledge of his movements or designs.
Meanwhile Caldagues, who had been left in charge of the blockade, had maintained his post, and repulsed a heavy sortie which Duhesme and the garrison had directed against his posts on the sixteenth. But when the news of the battle of Cardadeu reached him in the evening, he evacuated all the parts of his line which lay to the east of the Llobregat, and concentrated his 12,000 men at Molins de Rey and San Boy, on the further bank of that river. He was forced to abandon at Sarria the large dépôt of provisions from which the left wing of the investing force had been fed.
The road from Cardadeu and San Culgat to Barcelona being thus left open, St. Cyr marched in triumph into Barcelona on the morning of the seventeenth. He complains in his memoirs that he did not discover one single vedette from the garrison pushed out to meet him, and that Duhesme did not come forth to receive him, or give him a single word of thanks. Indeed, when the Governor at last presented himself to meet the commander of the Seventh Corps, he spent his first words not in expressing his appreciation for the service which had been rendered him, but in demonstrating that he had never been in danger, and could have held out for six weeks more. He was somewhat abashed when St. Cyr replied by presenting him with a copy of one of his own former dispatches to Berthier, which painted the condition of the garrison in the blackest colours, and asked for instant succours lest the worst might happen[77].
It was clear that the two generals would not work well together, but as St. Cyr held the supreme command, and was determined to assert himself, Duhesme could do no more than sulk in silence. The conduct of the operations against the Catalans had been taken completely out of his hands.
St. Cyr’s daring march to Barcelona had been crowned with complete success. It was by far the most brilliant operation on the French side during the first year of the war. That it was perilous cannot be denied: if the commander of the Seventh Corps had found the whole army of Vives entrenched at the passage of the Tordera, or across the defile of the Trentapassos, it seems impossible that he could have got forward to Barcelona. Thirty thousand men, of whom half were regular troops, might have been opposed to him, and they could have brought artillery against him, while he had not a single piece. If once checked he must have retreated in haste, for he had only ammunition for a single battle. But the rapid and unexpected character of his movements entirely puzzled the enemy, and he was fortunate in having a Vives to contend against. ‘When the enemy has no general,’ as Schepeler remarks while commenting on this campaign, ‘any stroke of luck is possible.’ Against a capable officer St. Cyr would probably have failed, but he had a shrewd suspicion of the character of his opponent from what had happened during the siege of Rosas: he dared much, and his daring was rewarded by a splendid victory.