On the left of Byng and Morillo, Campbell’s Portuguese, about two thousand strong, were encamped above the village of Alduides on a mountain called Mizpira. They observed the national guards of the Val de Baygorry, preserved the communication between Byng and Hill, and in some measure covered the right flank of the latter. From the Alduides Campbell could retreat through the pass of Sahorgain upon Viscayret in the valley of Urroz, and through the passes of Urtiaga and Renacabal upon Eugui in the Val de Zubiri; finally by the lateral pass of Atalosti he could join Byng and the fourth division. The communication between all these posts was maintained by Long’s cavalry. [Sidenote: Wellington’s States.] Continuing the line of positions to the left, general Hill occupied the Bastan with the second British division, Sylveira’s Portuguese, and some squadrons of horse, but Byng’s and Campbell’s brigades being detached, he had not more than nine thousand sabres and bayonets. His two British brigades under general William Stewart guarded the Col de Maya; Sylveira’s Portuguese were at Erazu, on the right of Stewart, observing the passes of Arrieta, Yspegui and Elliorita; of which the two former were occupied by Major Brotherton’s cavalry and by the sixth Caçadores. The direct line of retreat and point of concentration for all these troops was Elizondo. From Elizondo the route of Pampeluna over the great chain was by the pass of Bellate and the valley of Lanz. The latter running nearly parallel with the valley of Zubiri is separated from it by a wooded and rugged ridge, and between them there were but three communications: the one high up, leading from Lanz to Eugui, and prolonged from thence to Viscayret in the valley of Urros; the other two lower down, leading from Ostiz and Olague to the village of Zubiri. At Olague the third division, furnishing four thousand three hundred bayonets under Picton, was posted ready to support Cole or Hill as occasion required. [Sidenote: Wellington’s Morning States.] Continuing the front line from the left of Stewart’s position at the Col de Maya, the trace run along the mountains forming the French boundary of the Bastan. It comprized the passes of Echallar and Vera, guarded by the seventh division under lord Dalhousie, and by the light division under general Charles Alten. The former furnishing four thousand seven hundred bayonets communicated with general Stewart by a narrow road over the Atchiola mountain, and the eighty-second regiment was encamped at its junction with the Elizondo road, about three miles behind the pass of Maya. The light division, four thousand strong, was at Vera, guarding the roads which led behind the mountains through Sumbilla and San Estevan to Elizondo. [Sidenote: Ibid.]