Pack’s division came up on the 28th, and took a position in the rear of the fourth division, covering the valley of the Lanz. The village of Sorauren in their front was held by the French; from which, in considerable force, they moved forward, and attacked the sixth division. But this movement was exposed to a flanking fire, that obliged the enemy to retire after suffering a serious loss. On the left of the division, a regiment of Portuguese caçadores was driven back by a simultaneous attack--but Ross’s brigade came rapidly forward, and completely repulsed the French. On the right, a renewed effort partially succeeded, as the Spanish regiments were deforced; but the 40th came to the charge, and cleared the hill of the enemy. The French marshal’s efforts had been directed against the whole of the height held by the fourth division. In almost all he was repelled--but on the right of the brigade of Ross, Soult was for a time successful-- and Campbell’s Portuguese regiments, unable to bear the furious and sustained attack, lost ground, and allowed the enemy to establish a strong body of troops within the allied position. Of necessity, General Ross, having his flank turned, immediately fell back. Wellington saw the crisis, and the 27th and 48th were directed to recover the ground with the bayonet. Ross moved forward in support,--a brilliant and bloody struggle terminated in the total repulse of the French division, which with severe loss, was precipitately driven from the height it had with such difficulty gained. At this period of the fight, Pack’s brigade advanced up the hill. The French gave up further efforts on the position,--and a long, sanguinary, and determined contest terminated. The fourth division in this affair had been most gloriously distinguished. The bayonet, in every trying exigency, was resorted to-- the charges were frequent--and some regiments, the fusiliers (7th and 23rd), with the 20th and 40th, repeatedly checked an advance, or recovered lost ground, by “steel alone.” Hill’s division had marched by Lanz, and Lord Dalhousie from San Estevan on Lizasso, and reached it on the 28th--while the seventh division moved to Marcelain, and covered the Pamplona road. Soult, failing in his efforts on the front of the position, determined to attack Hill’s corps, turn the left of the allies, and thus relieve Pamplona. D’Erlon had reached Ostiz on the 29th, and Soult detached a division from his own position to strengthen him. During the night of the 29th, he crossed the Lanz, and occupied the heights in front of the sixth and seventh divisions--and withdrawing the corps hitherto posted opposite the third English division, his left wing closed in on the main position of the mountain, directly in front of the fourth division. D’Erlon’s corps, now considerably strengthened, communicated by the right of the Lanz with the heights occupied by their left.