He kept the secret of his design so perfectly that his own engineers never suspected it, and his adjutant-general, Murray, went home on leave without dreaming anything was going to happen. Wellington collected artillery ostensibly for the purpose of arming Almeida, but the guns were transshipped at sea and brought secretly to the mouth of the Douro. No less than eight hundred mule-carts were constructed without anybody guessing their purpose. Wellington, while these preparations were on foot, was keenly watching Marmont and Soult, till he saw that they were lulled into a state of mere yawning security, and then, in Napier’s expressive phrase, he “instantly jumped with both feet upon Ciudad Rodrigo.” This famous fortress, in shape, roughly resembles a triangle with the angles truncated. The base, looking to the south, is covered by the Agueda, a river given to sudden inundations; the fortifications were strong and formidably armed; as outworks it had to the east the great fortified Convent of San Francisco, to the west a similar building called Santa Cruz; while almost parallel with the northern face rose two rocky ridges called the Great and Small Teson, the nearest within six hundred yards of the city ramparts, and crowned by a formidable redoubt called Francisco. The siege began on January 8. The soil was rocky and covered with snow, the nights were black, the weather bitter. The men lacked intrenching tools. They had to encamp on the side of the Agueda furthest from the city, and ford that river every time the trenches were relieved. The 1st, 3d, and light divisions formed the attacking force; each division held the trenches in turn for twenty-four hours. Let the reader imagine what degree of hardihood it took to wade in the gray and bitter winter dawn through a half-frozen river, and, without fire or warm food, and under a ceaseless rain of shells from the enemy’s guns, to toil in the frozen trenches, or to keep watch, while the icicles hung from eyebrow and beard, over the edge of the battery for twenty-four hours in succession. Nothing in this great siege is more wonderful than the fierce speed with which Wellington urged his operations. Massena, who had besieged and captured the city the year before in the height of summer, spent a month in bombarding it before he ventured to assault. Wellington broke ground on January 8, under a tempest of mingled hail and rain; he stormed it on the night of the 19th.