At this critical moment some of the defenders being called away to aid in recovering the castle, the ramparts were not entirely manned, and the assailants, having discovered a corner of the bastion where the scarp was only twenty feet high, placed three ladders under an embrasure which had no gun, and was only stopped with a gabion. Some men got up with difficulty, for the ladders were still too short, but the first man being pushed up by his comrades drew others after him, and thus many had gained the summit; and though the French shot heavily against them from both flanks and from a house in front they thickened and could not be driven back. Half the 4th Regiment then entered the town itself, while the others pushed along the rampart towards the breach, and by dint of hard fighting successively won three bastions. In the last, General Walker, leaping forwards sword in hand just as a French cannonier discharged a gun, fell with so many wounds that it was wonderful how he survived, and his soldiers seeing a lighted match on the ground cried out a mine! At that word, such is the power of imagination, those troops whom neither the strong barrier nor the deep ditch, nor the high walls, nor the deadly fire of the enemy could stop, staggered back, appalled by a chimera of their own raising. While in that disorder a French reserve under General Veillande drove on them with a firm and rapid charge, pitching some over the walls, killing others outright, and cleansing the ramparts even to the San Vincente: but there Leith had placed a battalion of the 38th, and when the French came up, shouting and slaying all before them, it arose and with one close volley destroyed them. This stopped the panic, and in compact order the soldiers once more charged along the walls towards the breaches; yet the French, although turned on both flanks and abandoned by fortune, would not yield. Meanwhile the detachment of the 4th Regiment which had entered the town when the San Vincente was first carried, was strangely situated; for the streets though empty were brilliantly illuminated, no person was seen, yet a low buzz and whisper were heard around, lattices were now and then gently opened, and from time to time shots were fired from underneath the doors of the houses by the Spaniards, while the regiment, with bugles sounding, advanced towards the great square of the town. In its progress several mules going with ammunition to the breaches were taken, but the square was as empty and silent as the streets, and the houses as bright with lamps. A terrible enchantment seemed to prevail, nothing to be seen but light, and only low whispers heard, while the tumult at the breaches was like the crashing thunder: there the fight raged, and quitting the square the regiment attempted to take the enemy in reverse, but they were received with a rolling musketry, driven back with loss, and resumed their movement through the streets.