Longa, who had resumed his old positions above the Salinas de Lesaca, was to move in two columns across the Bidassoa. One passing by the ford of Salinas was to aid the left wing of the light division in its attack on the Bayonette; the other passing by the bridge of Vera, was to move up the ravine separating the slopes of the Bayonette from the Puerto de Vera, and thus connect the two attacks of the light division. During these operations Longa was also to send some men over the river at Andarlasa, to seize a telegraph which the French used to communicate between the left and centre of their line. Behind the light division general Cole was to take post with the fourth division on Santa Barbara, pushing forward detachments to secure the commanding points gained by the fighting troops in front. The sixth division was meanwhile to make a demonstration on the right by Urdax and Zagaramurdi, against D’Erlon’s advanced posts. Thus without weakening his line between Roncesvalles and Echallar lord Wellington put nearly twenty thousand men in motion against the Rhune mountain and its dependents, and he had still twenty-four thousand disposable to force the passage of the Lower Bidassoa. It has been already shewn that between Andarlasa and Biriatu, a distance of three miles, there were neither roads nor fords nor bridges. The French trusting to this difficulty of approach, and to their entrenchments on the craggy slopes of the Mandale, had collected their troops principally, where the Bildox or green mountain, and the entrenched camp of Biriatu overlooked the fords. Against these points Wellington directed general Freyre’s Spaniards, who were to descend from San Marcial, cross the upper fords of Biriatu, assail the Bildox and Mandale mountains, and turn the left of that part of the enemy’s line which being prolonged from Biriatu crossed the royal road and passed behind the town of Andaya. Between Biriatu and the sea the advanced points of defence were the mountain of _Louis_ XIV., the ridge called the _Caffé Republicain_, and the town of Andaya. Behind these the _Calvaire d’Urogne_, the _Croix des Bouquets_, and the camp of the _Sans Culottes_, served as rallying posts.