During the week that followed, the Minho regiment was engaged in watching the defiles by which Massena might communicate with Ciudad Rodrigo, or through which reinforcements might reach him. Wilson and Trant were both engaged on similar service, the one farther to the north; while the other, who was on the south bank of the Tagus with a number of Portuguese militia and irregulars, endeavoured to prevent the French from crossing the river and carrying off the flocks, herds, and corn which, in spite of Wellington's entreaties and orders, the Portuguese government had permitted to remain, as if in handiness for the French foraging parties. Owing to the exhausted state of both the British and Portuguese treasuries, it was impossible to supply the corps acting in rear of the French with money for the purchase of food. But Terence had received authority to take what provisions were absolutely necessary for the troops, and to give orders that would, at some time or other, be honoured by the military chest. A comparatively small proportion of his men were needed to guard the defiles, against such bodies of troops as would be likely to traverse them, in order to keep up Massena's communications. Leaving, therefore, a hundred men in each of the principal defiles; and ordering them to entrench themselves in places where they commanded the road, and could only be attacked with the greatest difficulty; while the road was barred by trees felled across it, so as to form an impassable abattis, behind which twenty men were stationed; Terence marched, with 1500 men, towards the frontier. Five hundred of these were placed along the Coa, guarding the roads and, with the remainder, he forded the river and placed himself in the woods, in the plain between Almeida and Ciudad Rodrigo. Here he captured several convoys of waggons, proceeding with provisions for the garrison of the former place. A portion of these he despatched, under guard, for the use of the troops on the Coa, and for those in the passes; thus rendering it unnecessary to harass the people, who had returned to their villages after Massena had advanced against Lisbon.