There followed twelve days of furious industry, of trenches pushed tirelessly forward through mud and wet, and of cannonading that only ceased when the guns grew too hot to be used. Captain MacCarthy, of the Fiftieth Regiment, has left a curious little monograph on the siege, full of incidents, half tragic and half amusing, but which show the temper of Wellington’s troops. Thus he tells how an engineer officer, when marking out the ground for a breaching-battery very near the wall, which was always lined with French soldiers in eager search of human targets, “used to challenge them to prove the perfection of their shooting by lifting up the skirts of his coat in defiance several times in the course of his survey; driving in his stakes and measuring his distances with great deliberation, and concluding by an extra shake of his coat-tails and an ironical bow before he stepped under shelter!” On the night of April 6, Wellington determined to assault. No less than seven attacks were to be delivered. Two of them--on the bridge-head across the Guadiana and on the Pardaleras--were mere feints. But on the extreme right Picton with the third division was to cross the Rivillas and escalade the castle, whose walls rose, time-stained and grim, from eighteen to twenty-four feet high. Leith with the fifth division was to attack the opposite or western extremity of the town, the bastion of San Vincente, where the glacis was mined, the ditch deep, and the scarp thirty feet high. Against the actual breaches Colville and Andrew Barnard were to lead the light division and the fourth division, the former attacking the bastion of Santa Maria and the latter the Trinidad. The hour was fixed for ten o’clock, and the story of that night attack, as told in Napier’s immortal prose, is one of the great battle-pictures of literature; and any one who tries to tell the tale will find himself slipping insensibly into Napier’s cadences.