A _reconnaissance_ by Soult and Marmont, on the 22nd of June, induced a belief that an action would result. Wellington, with admirable tact, kept his masses out of sight, and the marshals failed in discovering his dispositions. The British bivouacs were in the woods contiguous to the river:--head-quarters at Vicente, Hill’s corps at Torre de More on the right, and Picton’s division, on the left, at Campo Mayor. On the same morning that the French marshals had examined the allied position, a strong cavalry force was detached from the enemy’s posts, to cross the Guadiana and move towards Elvas. Nothing would have particularly marked this demonstration, had not an English picket of sixty men, with three officers, been cut off and made prisoners, by mistaking the French for Portuguese dragoons. The absurd fancy indulged in at home, of imitating foreign patterns in clothing the cavalry, led to numerous mistakes; while it greatly embarrassed officers, in ascertaining correctly whether troops, when at a trifling distance, were in reality friends or foes. For a month the French marshals remained together; their numerous cavalry scouring the face of the country to an immense extent, and wasting it of every thing that was convertible into sustenance for either men or horses. At last, these precarious supplies, obtained from an impoverished country, failed altogether; and Soult and Marmont retired from Estramadura,--the latter, marching northwards, and the former falling back upon Seville. On this movement being made, Wellington instantly changed his quarters, first to Portalegre, and afterwards to Fuente Guinaldo. The occupation of the posts and villages contiguous to Ciudad Rodrigo, must, of necessity, cut off from that garrison every chance of a casual supply; while the distance of the French cantonments (sixty miles) would make it impossible for either of the marshals to introduce a convoy, unless it were accompanied and protected by an entire _corps d’armée_. Wellington had calculated on these difficulties; his plans were soundly conceived; and they were carried out with that steady resolution, which has always characterized the greatest general that Britain ever claimed. As had been anticipated, Ciudad Rodrigo became exceedingly straitened; and the French marshals, at great inconvenience, were obliged to concentrate at Salamanca, to cover the introduction of supplies, which at every cost, must be thrown into the fortress. Rumour, of course, was busy; one report making them fifty thousand, and another swelling their numbers to eighty. The allied general, however, determined to retain his cantonments; and the position of Guinaldo was strengthened by field-works; while the different divisions were posted so as to admit of speedy concentration. On the right bank of the Agueda, the light division guarded the Sierra de Gata,--while Picton held the more advanced position of El Bodon.