Soult halted three days at Braga, a time which he utilized for the repair of his artillery, and the replenishing of the cartridge boxes of his infantry from the not too copious supply of munitions captured from the Portuguese. His cavalry scoured the country down the Cavado as far as Barcelos, and southward to the line of the Avé, only to find insurgents everywhere, the bridges broken, and the fords dredged up and staked.
The Marshal, however, undaunted by the gloomy outlook, resolved to march straight for his destined goal, without paying any attention to his communications. He now made Braga a temporary base, left there Heudelet’s division in charge of 600 sick and wounded, and moved on Oporto at the head of his three remaining infantry divisions and all his cavalry.
Two good _chaussées_, and one additional mountain road of inferior character, lead from Braga to Oporto, crossing the Avé, the one four, the next six, the third twenty-four miles from the sea. The first and most westerly passes it at Ponte de Avé, the second at Barca de Trofa, where there is both a bridge and a wide ford, the third and least obvious at Guimaraens not far from its source in the Serra de Santa Catalina. Soult resolved to use all three for his advance, wisely taking the difficult road by Guimaraens into his scheme, since he guessed that it would probably be unwatched by the Portuguese, precisely because it was far less eligible than the other two. He was perfectly right: the Bishop of Oporto, the moment that he heard of the fall of Braga, pushed up some artillery and militia to aid the _Ordenanza_ in defending both the Ponte de Avé and the Barca de Trofa bridges. Each was cut: batteries were hastily thrown up commanding their approaches, and entrenchments were constructed in their rear. At Barca de Trofa the ford was dredged up and completely blocked with _chevaux de frise_. But the remote and secondary passage at Guimaraens was comparatively neglected, and left in charge of such of the local _Ordenanza_ as had returned home after the rout of Braga.
Soult directed Lorges’ dragoons against the western road: he himself with Delaborde’s and Merle’s infantry and Lahoussaye’s cavalry took the central _chaussée_ by Barca de Trofa. On the difficult flanking path by Guimaraens he sent Franceschi’s light horse and Mermet’s infantry. On both the main roads the Portuguese positions were so strong that the advancing columns were held back: Soult would not waste men--he was beginning to find that he had none to spare--in attempting to force the entrenched positions opposite him. After feeling them with caution, he pushed a column up-stream to a small bridge at San Justo, which had been barricaded but not broken. Here he established by night a heavy battery commanding the opposite bank. On the morning of the twenty-sixth he opened fire on the Portuguese positions across the water, and, when the enemy had been well battered, hurled the brigade of General Foy at the fortified bridge. It was carried, and Delaborde’s division was beginning to pass, when it met another French force debouching on the same point. This was composed of Mermet and Franceschi’s men: they had beaten the local _Ordenanza_ at Guimaraens, crossed the Avé high up, and were now pushing along the southern bank to take the Barca de Trofa position in the flank. Thus Soult found that, even if his frontal assault at San Justo had failed, his left-hand column would have cleared the way for him a few hours later, being already across the river and in the enemy’s rear. Indeed his lateral detachment had done all that he had expected from it, and at no great cost. For though the _Ordenanza_ had opposed it bravely enough, they had never been able to hold it back. The only notable loss that had been sustained was that of General Jardon, one of Mermet’s brigadiers, who had met his death by his own recklessness. Finding his men checked for a moment, he had seized a musket and charged on foot at the head of his skirmishing line. This was not the place for a brigadier-general, and Jardon died unnecessarily, doing the work of a sub-lieutenant.