Putting together the movement of Zayas, and the fact that some at least of the allied army was now on the Vejer road, the Marshal came to the correct conclusion that the army in the field was intending to get into communication with Cadiz and its garrison. Accordingly he made a new plan to suit this hypothesis: of his three divisions one, that of Villatte, was to block the neck of the peninsula along which the track from Vejer and Conil leads to the Santi Petri creek and the Isle of Leon. The other two, concentrated at Chiclana, were to wait till the allied force had found itself blocked in front by Villatte, and then to fall upon its flank, in the space of three miles that lies between the hill of Barrosa and the position where Villatte had been posted. This plan would place the intercepting division in obvious danger, since, while attacked in front by the head of the allied army, it might find Zayas attempting once more to lay his bridge, and to take it in the rear. Such a movement by the garrison could not be stopped, because the end of the peninsula, by the bridge-place, was under the guns of several heavy batteries. But Victor directed Villatte not to fight to the last, but to be contented with holding the Allies in check long enough to enable the main body to fall on their flank. The sound of his guns would be the signal for the two striking divisions to move out from the wood of Chiclana, and dash at the long column whose head would be engaged with Villatte, while its tail would still be coming along the coast many miles to the rear. For 14,000 men had only the single line of communication along which to move. [Illustration: THE BARROSA CAMPAIGN] Meanwhile Cassagne, at Medina Sidonia, was sent orders to find out exactly what was in front of him, and if there was no solid force, to march to join the main body on the morning of the 5th. He must have received the order to do so somewhere in the afternoon of the 4th.