Bock continued his retreat in fine order, regardless alike of the cannonade and of the light horsemen on his flanks, until the enemy’s scouts gained a height, from whence, at the distance of three miles, they for the first time perceived Graham’s twelve thousand men, ranged with eighteen guns on an order of battle perpendicular to the Tormes. From the same point Wellington’s heavy columns were seen clustering on the height above the fords of Santa Marta, and the light division at Aldea Lengua, ready either to advance against the French troops left on the right bank, or to pass the river in aid of Graham. At this sight Marmont hastily faced about, repassed the Tormes, and resumed his former ground.
Wellington, unwilling to stir before the forts fell, here again refused an accidental advantage; for it is not easy to see how the French could have avoided a defeat if he had moved with all the troops on the right bank against the French divisions on that side.
The forts were now closely pressed. On the 23rd, the heavy guns being brought back, a battery to breach San Cajetano was armed with four pieces; yet the line of fire being oblique only beat down the parapet and knocked away the palisades. An escalade of that fort and La Merced was tried at ten o’clock, yet failed in half an hour with a loss of one hundred and twenty men and officers; the wounded were brought off next day under truce, and the enemy had all the credit of the fight. General Bowes, whose rank might have excused his leading so small a force, being wounded early in this assault, was having his hurt dressed when he heard the troops were yielding, whereupon he returned to the fight and fell.
Want of powder now suspended the siege until the 26th, when a convoy arrived. Then the second and third batteries were re-armed, and the field-pieces replaced on the neighbouring convent. The iron howitzers, throwing hot shot, soon set the convent within San Vincente on fire; but the garrison extinguished the flames and this balanced combat continued during the night. In the morning the besiegers’ fire was redoubled, the convent was in a blaze, the breach of Cajetano improved, and a fresh storming party was assembled, when the white flag waved from Cajetano. Negotiation ensued, but Wellington, judging it an artifice to gain time, ordered a double assault, to oppose which Cajetano scarcely fired a shot, and the flames raged so at Vincente no opposition could be made. Seven hundred prisoners, thirty pieces of artillery, provisions, arms, clothing, and a secure passage over the Tormes, were the immediate fruits of this capture: not the less prized that the breaches were found more formidable than those at Rodrigo, and a storm would have been very doubtful if the garrison could have gained time to extinguish the flames in San Vincente. The allies had ninety killed, and their whole loss was five hundred men and officers, of which one hundred and sixty men with fifty horses fell outside Salamanca, the rest in the siege.
Combats between the Duero and the Tormes. (July, 1812.)
When the forts were taken Marmont retreated. Wellington pursued by easy marches, and on the 2nd of July inflicted a slight loss on the rear-guard at the bridge of Tordesillas; it would have been a great one if he had not been deceived by a false report that the French had broken the bridge the night before.
Marmont then took the line of the Duero, having fortified posts at Zamora and Toro, and broken the bridges there and at Puente Duero and Tudela also, preserving only that of Tordesillas. His left was at Simancas on the Pisuerga, which was unfordable, and the bridges at that place and Valladolid were commanded by fortified posts. His centre was at Tordesillas and very numerous; his right on heights opposite the ford of Pollos, which Wellington seized instantly as it gave him a passage, though a difficult one and unfit for a large force. Head-quarters were then fixed at Rueda, and the army disposed with a head against the ford of Pollos and bridge of Tordesillas, the rear on the Zapardiel and Trabancos rivers to meet any outbreak from the Valladolid side. Marmont’s line of defence, measured from Valladolid to Zamora, was sixty miles; from Simancas to Toro above thirty; but the actual occupation was not above twelve; the bend of the river gave him the chord, the allies the arc, and the fords were few and difficult.
It was Wellington’s design to force Marmont by the co-operation of the Gallician and other Spanish forces to live on his fixed magazines; Castaños however, like all Spanish generals, failed in the hour of need. Marmont had then the means of rendering the campaign futile if not disastrous to the British general, but with a false judgment threw away his actual advantages by striving to better them. Bonet’s recall from the Asturias was a great error. Napoleon and Wellington had alike foreseen the importance of holding that province; the one ordered, the other calculated on its retention, and their judgment was now vindicated. The Gallicians and Asturians immediately moved by the coast towards Biscay, where the maritime expedition from Coruña, a large one under Sir Home Popham, had descended on several points; Caffarelli therefore retained the reinforcement destined for Marmont, and that marshal, by gaining six thousand men under Bonet, lost twelve or thirteen thousand of the army of the north, and opened all the northern provinces to the Spaniards.
In this state of affairs neither Wellington nor Marmont had reason to fight on the Duero. The latter because his position was so strong he could safely wait for Bonet’s and Caffarelli’s troops, while the king operated against the allies’ communications. The former because he could not attack the French, except at great disadvantage; for the fords of the Duero were little known, and that of Pollos very deep. To pass the river there and form within gunshot of the enemy’s left, without other combinations, promised nothing but defeat, for the strength of ground was with the French. While they had the bridge at Tordesillas, an attempt to force a passage would have enabled Marmont to fall on the front and rear, if the operation was within his reach; if beyond his reach, that is to say, near Zamora, he could cut the communication with Rodrigo and yet preserve his own with Caffarelli and the king. Wellington therefore resolved to wait until the fords should become lower, or the Gallicians and Partidas should be persuaded to act, and thus force the French to detach men or dislodge for want of provisions.
D’Urban’s Portuguese cavalry, which was on the French side of the river, now incommoded Marmont’s right, and Foy marched to drive them off; General Pakenham, commanding the third division, immediately crossed the ford of Pollos, which brought Foy back, and Marmont then augmented the efficiency of his cavalry by taking a thousand horses from the infantry officers and sutlers.