But to return to the main focus of the war in the North. On August 15th Ney’s troops, having at last received the siege-train and a good supply of munitions from Ciudad Rodrigo and Salamanca, broke ground in front of Almeida. Wellington was much relieved at the news, as it was now clear that Masséna was about to besiege the place, and not to mask it and march forward into Portugal. The front which the engineers of the 6th Corps had chosen for attack was that facing the bastion of San Pedro on the south-east front of the town. The first parallel was drawn at a distance of only 500 yards from the walls; it was found very difficult to complete, owing to the shallowness of the earth, and had to be built with gabions and sandbags rather than to be excavated in the rocky subsoil. In many places outcrops of stone came to the surface, and had actually to be blasted away by the sappers, in order to allow of a trench of the shallowest sort being formed. It was clear that the construction of approaches towards the town would present the greatest difficulties, since there was little earth in which to burrow. Between the 17th and the 24th no less than eleven batteries were constructed along the first parallel. They were armed with more than fifty heavy guns, for there was artillery in abundance; in addition to the old siege-train many of the Spanish guns taken in Ciudad Rodrigo had been brought forward. The Portuguese kept up a vigorous but not very destructive fire all the time; but on the 24th they succeeded in preventing the commencement of a second parallel, driving out the workmen before they could cover themselves in the stony ground. At six o’clock on the morning of the 26th August the batteries were all completed and opened fire. Several quarters of the town were in flames before the afternoon, and the guns on the three bastions attacked were unable to hold their own against the converging fire directed on them. But no serious damage had been done to the defences, and the governor was undismayed. At seven o’clock in the evening, however, a fearful disaster occurred--one in its own way unparalleled in magnitude during the whole Peninsular War. The door of the great magazine in the castle had been opened, in order to allow of the sending out of a convoy of powder to the southern ramparts, where the artillery had been hard at work all day. A leaky barrel was handed out, which left a trail of powder behind it along the ground; it was being fixed to the saddle of a pack-ass when a French bomb fell in the courtyard of the castle. In bursting, the bomb chanced to ignite the train; the spark ran along it and exploded another barrel at the door of the magazine, which was still open[317]. This mischance fired the whole store, and in two seconds the castle, the cathedral at its side, and the whole central portion of the town had been blasted out of existence. ‘The earth trembled,’ wrote a French eye-witness, ‘and we saw an immense