An hour earlier Terence had arrived on the other side of the river, and had at once made preparations for blowing up the bridge. The men had been but a short time at work when numbers of the townsmen streamed across the bridge and reported that a great body of the French were entering the town. Terence had a hasty consultation with Herrara, and both agreed that they could not hope to hold the bridge long against the whole French army, especially as they had learned two hours before from a peasant who had ridden up, that strong bodies of French troops had crossed the river by the ferries at Ribadavia and Barbibante, and that they might shortly be attacked in flank. The powder-barrels were therefore hastily repacked, and the troops marched off towards the hills on their left.
They were but half-way across the plain when a regiment of French cavalry were seen riding in pursuit. The regiments were at once formed into squares within fifty yards of each other, and Terence and Bull in the centre of one square, and Herrara and Macwitty in the other, exhorted the men to stand steady, assuring them there was nothing whatever to be feared from the cavalry if they did so. The French rode up towards the squares, but were met by heavy volleys, and after riding round them drew off, having suffered considerable loss, being greatly surprised at finding that instead of a mob of armed men, such as they had met at Avia, they were encountered by soldiers possessing the steadiness of trained troops.
The regiments resumed their march until far up the hill, where they proceeded to cut down trees and brushwood and to form an encampment, as their leader had decided to stay here and await events until Soult's intentions were clearly shown. There were two courses open to the French general. He might advance to Allaritz and then march along the Lima, be joined by his artillery and train from Tuy, and then move direct upon Oporto, or he might follow the valley of the Tamega to Chaves, whence he would have the choice of routes, and take either that over the Sierra de Cabrera to Braga, or continue his course down the valley until he reached the Douro.
It was not until the 4th of March that the French again moved forward. In the meantime Terence was forced to remain quiet, except that each day he marched his men farther among the hills and drilled them for some hours perseveringly. The affair on the Minho and the repulse of the French cavalry had given them great confidence in themselves and their leader, and had shown them the value of steadiness, and of maintaining order and discipline in the ranks. They therefore devoted themselves even more willingly and zealously than before to their military exercises, and the ten days taken by Soult in preparing for the advance were well spent in accustoming the Portuguese to rapid movements among the mountains, and to attaining a fair knowledge of what would be required of them in mountain warfare. Two companies always remained in the camp, and these had several skirmishes with bodies of French marauders, and small parties of cavalry making across the country to ascertain the position and strength of the Portuguese.
The advance of the French was rapid, and on the 5th the cavalry and a portion of the infantry reached Villa Real, where, on the evening of the same day, two divisions of infantry arrived. That night Terence with his men having on the 4th marched along the hills parallel to the road, made a forced march, crossed the road and took up a position on the spur of the mountains between Montalegre and the river. Even yet it was doubtful which route Soult intended to follow, as the division at Villa Real might be intended only to prevent Romana and Silveira falling upon his flank. As he marched down the valley of the Lima, he had learned from Romana that he and Silveira had decided to fall back to Chaves, and that he agreed with Terence's opinion that he had better remain in the rear of the French, and intercept their communications with Orense.
On the following morning the French advanced in force to Monterey. Romana abandoned the position as they advanced, drew off to Verin, and then retired along the road towards Sanabria. He thus left it open to himself either to follow the road to Chaves, as agreed upon, or to retire into Spain through the mountains. Franceschi's cavalry and a battalion of French infantry overtook between two and three thousand men forming the rear of Romana's column. The latter drew up in a great square. Franceschi attacked the rear face with his infantry, passed with his cavalry round the sides of the square, and placed himself between it and the rest of the retiring column. He had with him four regiments of cavalry, and now hurled a regiment at each side of the square.
The Spaniards were at once seized with dismay, broke their formation, and in a moment the French cavalry were upon them, cutting and trampling them down. Twelve hundred were killed and the rest made prisoners. As soon as Romana heard of the disaster that had befallen his rearguard, he broke his engagement with Silveira and led his force over the mountains into Spain, where the news of his defeat caused the Spanish insurgent bands to disperse rapidly to their homes, where they delivered up their arms; and even the priests, who had been the main promoters of the rising, seeing the failure of all their plans, advised them to maintain a peaceable attitude in future.
Silveira was not more fortunate, for two thousand of his troops with some guns, issuing from the mountains just as Franceschi returned from the annihilation of Romana's rearguard, the French cavalry charged and captured the Portuguese guns, and drove Silveira down the valley.
Soult paused two days at Monterey, the baggage and hospital train, and a great convoy of provisions being brought up from Orense, under the guard of a whole division. This rendered it evident that he intended to cut himself off altogether from Spain, and to subsist entirely upon the country. It was clear then that it was useless to attempt to fall upon his rear, and by a long march through the mountains Terence took his force down to Chaves.
Here he found that Silveira, deserted by Romana and beaten by Franceschi, had fallen back to a mountain immediately behind Chaves. Terence continued his march until he joined him. He found a great tumult going on among his troops; always insubordinate, they were now in a state of mutiny. Many of the officers openly advocated that they should desist from a struggle in which success was altogether hopeless, and should go over and join the French. The troops, however, not only spurned the advice, but fell upon and killed several of those who offered it, and demanded from Silveira that he should lead them down to defend Chaves. This he refused to do, saying that the fortifications were old and useless, the guns worn out, and that were they to shut themselves up there, they would be surrounded and forced to surrender.