Before attacking the fortress it was necessary to capture one of the outlying forts, and that known as the Picurina was selected, because the bastion of the Trinidad, which lay behind it, was the weakest portion of the fortress. The trenches were commenced against this on the night of the 17th, and, although the French made some vigorous sorties, the works progressed so rapidly that all was ready for an assault on the forts on the 25th, a delay of two days having been occasioned by the French taking guns across the river, which swept the trenches, and rendered work impossible, until a division was sent round to drive in the French guns and invest the fortress on that side. The Picurina was strong, and desperately defended, but it was captured after a furious assault, which lasted one hour, and cost nineteen officers and three hundred men. It was not, however, until next evening that the fort could be occupied, for the guns of the town poured such a hail of shot and shell into it, that a permanent footing could not be obtained in it. Gradually, day by day, the trenches were driven nearer to the doomed city, and the cannon of the batteries worked day and night to establish a breach. Soult was known to be approaching, but he wanted to gather up all his available forces, as he believed the town capable of holding out for another month, at least. Still he was approaching, and, although the three breaches were scarcely yet practicable, and the fire of the town by no means overpowered, Wellington determined upon an instant assault, and on the night of the 6th of April the troops prepared for what turned out to be the most terrible and bloody assault in the annals of the British army. There were no less than six columns of attack, comprising in all eighteen thousand men. Picton, on the right with the third division was to cross the Rivillas and storm the castle. Wilson, with the troops in the trenches, was to attack San Roque. In the center the fourth and light division, under Colville and Barnard, were to assault the breaches; and on the left Leith, with the fifth division, was to make a false attack upon the fort of Pardaleras, and a real attack upon the bastion of San Vincente by the river side. Across the river the Portugese division, under Power, was to attack the works at the head of the bridge. The night was dark and clouded, and all was as still as death outside the town, when a lighted carcass, that is a large iron canister filled with tar and combustibles, fell close to the third division, and, exposing their ranks, forced them to commence the attack before the hour appointed. Crossing the Rivillas by a narrow bridge, under a tremendous fire, the third division assaulted the castle, and, although their scaling-ladders were over and over again hurled down, the stormers at last obtained a footing, and the rest of the troops poured in and the castle was won. A similar and more rapid success attended the assault on San Roque, which was