The 9th, they resumed their march for the bridge of Vouga, and, at the same time, Hill’s division, taking the Aveiro road, the whole reached the line of the Vouga river that evening; but Paget’s division was not brought up until after dark, and then with caution, to prevent the enemy’s guards from seeing the columns, the intent being to surprise Franceschi the next morning.

That general, with all his cavalry, a regiment of Mermet’s division, and six guns, occupied a village, about eight miles beyond Vouga bridge, called Albergaria Nova; the remainder of Mermet’s infantry were at Grijon, one march in the rear, and on the main road to Oporto. Franceschi had that day informed Soult that the allied forces were collecting on the Mondego, and that Trant’s posts had closed upon the Vouga; but he was far from suspecting that the whole army was upon the last river, although, from the imprudent conversation of an English officer, bearing a flag of truce, he had reason to expect an attack of some kind.

Sir Arthur Wellesley’s plan was partly arranged upon the suggestion of the field-officer who had met D’Argenton. He had observed, during his intercourse with the conspirators, that the lake of Ovar was unguarded by the French, although it extended twenty miles behind their outposts, and that all the boats were at Aveiro, which was in possession of the allies. On his information it was decided to turn the enemy’s right by the lake.

Accordingly, general Hill embarked, the evening of the 9th, with one brigade, the other being to follow him as quickly as possible. The fishermen looked on at first with surprise; but, soon comprehending the object, they voluntarily rushed in crowds to the boats, and worked with such a will that the whole flotilla arrived at Ovar precisely at sunrise on the 10th, and the troops immediately disembarked. That day, also, marshal Beresford, having rallied Wilson’s corps upon his own, reached Pezo de Ragoa, and he it was that had repulsed Loison, and pursued him to Amarante.

Both flanks of the French army were now turned, and at the same moment sir Arthur, with the main body, fell upon Franceschi, for, while the flotilla was navigating the lake of Ovar, the attempt to surprise that general, at Albergaria Nova, was in progress. Sherbrooke’s division was still in the rear; but general Cotton, with the light cavalry, crossing the Vouga, a little after midnight, endeavoured to turn the enemy’s left, and to get into his rear; the head of Paget’s division, marching a little later, was to pass through the defiles of Vouga, directly upon Albergaria, and Trant’s corps was to make way between Paget’s division and the lake of Aveiro.

This enterprise, so well conceived, was baffled by petty events, such as always abound in war. Sir Arthur Wellesley did not perfectly know the ground beyond the Vouga; and, late in the evening of the 9th, colonel Trant, having ascertained that an impracticable ravine, extending from the lake to Oliveira de Azemis, would prevent him from obeying his orders, passed the bridge of Vouga, and carried his own guns beyond the defiles, in order to leave the bridge clear for the British artillery and for general Richard Stewart’s brigade.

Stewart was charged to conduct the guns through the defile; but the task was difficult, several carriages broke down, and Trant’s corps thus took the lead of Paget’s column, the march of which was impeded by the broken gun-carriages. Meanwhile the cavalry, under Cotton, were misled by the guides, and came, in broad daylight, upon Franceschi, who, with his flank resting upon a wood, garnished with infantry, boldly offered a battle that Cotton durst not, under such circumstances, accept. Thus, an hour’s delay, produced by a few trifling accidents, marred a combination that would have shorn Soult of a third of his infantry and all his light cavalry, for it is not to be supposed that, when Franceschi’s horsemen were cut off, and general Hill at Ovar, Mermet’s division could have escaped across the Douro.

When sir Arthur Wellesley came up to Albergaria with Paget’s infantry, Franceschi was still in position, skirmishing with Trant’s corps, and evidently ignorant of what a force was advancing against him. Being immediately attacked, and his foot dislodged from the wood, he retreated along the road to Oliveira de Azemis, and was briskly pursued by the allied infantry; but, extricating himself valiantly from his perilous situation, he reached Oliveira without any serious loss; and continuing his march during the night, by Feria, joined Mermet the next morning at Grijon.

Franceschi, in the course of the 10th, could see the whole of the English army, including the troops with Hill; and it may create surprise that he should pass so near the latter general without being attacked: but Hill was strictly obedient to his orders, which forbade him to act on the enemy’s rear; and those orders were wise and prudent, because the principle of operating with small bodies on the flanks and rear of an enemy is vicious; and, while the number of men on the left of the Douro was unknown, it would have been rash to interpose a single brigade between the advanced-guard and the main body of the French. General Hill was sent to Ovar, that the line of march might be eased, and the enemy’s attention distracted, and that a division of fresh soldiers might be at hand to follow the pursuit, so as to arrive on the bridge of Oporto pell mell with the flying enemy. The soldier-like retreat of Franceschi prevented the last object from being attained.