It has been shewn that the Lanz covered the left of the allies and the right of the French. Nevertheless the heights occupied by either army were prolonged beyond that river, the continuation of the allies’ ridge sweeping forward so as to look into the rear of Sauroren, while the continuation of the French heights fell back in a direction nearly parallel to the forward inclination of the opposing ridge. They were both steep and high, yet lower and less rugged than the heights on which the armies stood opposed, for the latter were mountains where rocks piled on rocks stood out like castles, difficult to approach and so dangerous to assail that the hardened veterans of the Peninsula only would have dared the trial. Now the road by which the sixth division marched on the 27th, after clearing the pass of Doña Maria, sends one branch to Lanz, another to Ostiz, a third through Lizasso and Marcalain; the first and second fall into the road from Bellate and descend the valley of Lanz to Sauroren; the third passing behind the ridges, just described as prolonging the positions of the armies, also falls into the valley of Lanz, but at the village of Oricain, that is to say one mile behind the ground occupied by general Cole’s left. It was by this road of Marcalain that Wellington now expected the sixth and seventh divisions, but the rapidity with which Soult seized Sauroren caused a delay of eighteen hours. For the sixth division, having reached Olague in the valley of Lanz about one o’clock on the 27th, halted there until four, and then following the orders brought by lord Fitzroy Somerset marched by Lizasso to gain the Marcalain road; but the great length of these mountain marches, and the heavy storm which had terminated the action at Zabaldica sweeping with equal violence in this direction, prevented the division from passing Lizasso that night. However the march was renewed at daylight on the 28th, and meanwhile general Hill, having quitted the Bastan on the evening of the 27th, reached the town of Lanz on the morning of the 28th, and rallying general Long’s cavalry and his own artillery, which were in that valley, moved likewise upon Lizasso. At that place he met the seventh division coming from San Estevan, and having restored general Barnes’s brigade to lord Dalhousie, took a position on a ridge covering the road to Marcalain. The seventh division being on his right, was in military communication with the sixth division, and thus lord Wellington’s left was prolonged, and covered the great road leading from Pampeluna by Irurzun to Tolosa. And during these important movements, which were not completed until the evening of the 28th, which brought six thousand men into the allies’ line of battle, and fifteen thousand more into military communication with their left, D’Erlon remained planted in his position of observation near Elizondo! [Sidenote: Soult’s Correspondence, MSS.]