There is no doubt that this dangerous passage would have been accomplished without discovery, had not some guerilla horsemen rashly galloped over, and betrayed to the garrison the movement of the allies then in progress. In anticipation of the attempt, the guns of the works having been already trained upon the bridge, the first discharge from the French artillery was destructive; but the range was lost after a round or two, and in the darkness it could not be recovered. By this bold and well-planned manœuvre, Lord Wellington extricated his entire baggage and field equipage; and the allies were placed on the other side of the Arlanzan, and in the direct line of their retreat, with a loss comparatively trifling.

That night, the infantry reached Hormillas and Cellada del Camino, and the cavalry, Estepar and Villa Baniel—while Souham remained in perfect ignorance of Wellington’s retreat, until late on the evening of the 22nd.

On the 23rd, the infantry, after a long march, crossed the Pisuerga at Cordovillas and Torquemada; but the rear-guard were overtaken and attacked. Although greatly overmatched, the British cavalry made a bold stand, and for a time disputed the passage of the Harmoza. But they were obliged to retire as fresh squadrons of the enemy moved rapidly forward.

Part of the English dragoons crossed by a marshy rivulet, leaving Anson’s cavalry and the German light infantry as a rear-guard. The French came on with great impetuosity, and were charged and checked by the 11th light dragoons and horse artillery; but their numbers prevailed—the English were forced back—the guerilla horse completely routed—and some prisoners made. After much severe and desultory fighting, in which the fierceness of the pursuers was fully equalled by the obstinate resistance of the retreating horsemen, the British cavalry were driven back upon the Germans, under Halket. Fortunately the latter had gained a position—and assisted by the fire of the artillery, their fusilade fell on the left flank of the French with such murderous effect, that, failing in three determined charges, they were at last forced to fall back behind the heights, allowing the British rear-guard, without further molestation, to retire.

Wellington having crossed the Carrion on the 24th, was joined by a brigade of the Guards. The weather was bad, the means of transport wretched, the sick and wounded were beyond the Duero, and thus circumstanced, the allied commander determined to make a stand. The allies, therefore, occupied a range of heights, with the Carrion in their front, and their right wing resting on the Pisuerga.

Torquemada had witnessed a most disgraceful scene of riot and confusion on the part of the British. There, immense wine-stores were found and plundered—and it was computed that at one time, twelve thousand men were lying in the streets and houses in a state of helpless intoxication. Nor was the boasted sobriety of the French proof against the temptation these well-stored cellars presented. On their subsequent occupation of the town, Souham was obliged to stay his march for twelve hours,—for his own corps numbered more drunkards even than that of Lord Wellington had done.

The 25th was given as a halt-day to the troops—while necessary preparations were made for continuing the retreat, and interrupting the passage of the Carrion. All the bridges were ordered to be blown up—but the mines were in some cases so defective, that they failed entirely, and allowed the French an easy passage, while others of their troops crossed by the fords.[209] The working and covering parties at Banos and Palentia were made prisoners, and a quantity of baggage picked up by the enemy’s light cavalry. At Pisuerga, the corps that Souham pushed forward was attacked and driven back; and at Villa Muriel, after a sharp contest, the enemy were obliged to retire, and abandon the bank of the river that they had succeeded in occupying for a time.

On the 26th, having repaired the bridges, Souham crossed the Carrion in pursuit of the allies. On the 27th he was in force in front of Cabezon, and showed himself in such strength as determined Lord Wellington at once to fall back behind the Duero, and still further behind the Tormes, in the event of his being more closely pressed by the enemy. On the 28th, the French general extended his right to outflank the allies, and advanced against the troops who held the passes over the Pisguera and the Duero. Unable to maintain the bridges, they were effectually destroyed; and a town and wood, behind that of Tordesillas, were occupied by the regiment of Brunswick Oels, until the Germans were driven from both by the French, who effected the passage of the Duero with uncommon gallantry.

On the 29th, Wellington, after destroying the bridges at Valladolid and Cabezon, passed the river by those of Tudela and Ponte Duero. The passage of the French at Tordesillas obliged him instantly to move to his left, and take a position near Rueda—and there he remained, until joined by Sir Rowland Hill upon the 5th of November—who, after leaving a corps in Alba de Tormes, had fallen back before Joseph Buonaparte and Marshal Soult, with scarcely any loss. Wellington, having effected this object, and united himself with his detached corps, retired on the 7th to Torricilla,—and on the 8th halted in front of Salamanca.

Meanwhile, the armies of the north, south, and centre, had formed a junction on the right bank of the Tormes—and on the 10th, they attacked the town and castle of Alba, but without success. Passing the Tormes, at Lucinas, on the 14th, Soult, who commanded in chief, took a position on the wooded heights of Mozarbes. That evening the hostile armies were in each other’s presence; a distant cannonade and some trifling skirmishing took place; and, on the 15th, Lord Wellington formed beside the Arapiles and offered battle, which was declined. The enemy extended to the right, threatening to interrupt the communications with Rodrigo—and from the immense disparity of his force,[210] Wellington was obliged to move promptly by his right, and seize the roads leading into Portugal.