The heavy brigade of British cavalry, composed of the 3d Dragoon Guards, and the 4th Dragoons, came up to the French infantry soon after this charge had taken place; but at the moment of attacking it, were halted by Marshal Beresford, who, in doubt of the event of the charge made by the 13th, did not venture to expose the rest of his cavalry to any risk. This infantry therefore was allowed to move off without molestation; and in the night the French were enabled to carry into Badajos a great part of the guns, stores, and ammunition, which, in the charge of the 13th Dragoons, had been taken in the morning. The result of this affair, after so brilliant a commencement, was unfortunate; the return of the infantry was a considerable reinforcement to a garrison we were about, to attack; and the artillery, stores, and provisions were objects of the first necessity to its defence. The French having thus been driven over the Guadiana, Marshal Beresford sought as early as possible to pass that river, to invest Badajos, according to the instructions he had received. He was delayed, however, by the state of the river, and his unwillingness to risk its passage, without having previously secured his after communications across it; so that he did not effectually establish himself on the left bank, till the 6th and 7th of April, by which time the enemy had provisioned and repaired the place, and Marshal Mortier (leaving it in a state of defence,) had retired with his corps towards Seville. The blockade of Badajos was immediately established; and Lieutenant-General Cole was directed to conduct the siege of Olivenza, which, having only a garrison of 370 men, was surrendered at discretion on the 15th. Immediately after this event, and while Marshal Beresford was preparing for the attack of Badajos, Lord Wellington arrived. He was strongly impressed with the importance of this fortress to his future plans, in the new system of warfare which the late events had laid open to him. Snatched from him at the moment all his other calculations had triumphed, it had already been most detrimental to his general success. By the large detachment he had been obliged to make from his army, in consequence of its fall, it had prevented his more vigorous pursuit of Massena, and had destroyed his hope of undertaking the blockade of Ciudad Rodrigo (as well as that of Almeida,) before it could be re-victualled, and placed in a state of defence; and it still menaced, as long as it remained in the hands of the French, to curb all his offensive movements into Spain, by protecting their positions in the south of the country, and by enabling them at all times to threaten the southern provinces of Portugal.