On the 2nd of April, Marshal Soult's army having advanced from Seville, with a view to raise the siege of Badajoz, the covering army began to retire before the superior numbers of the French. This retreat was continued through Usagre, Villa Franca, and Almandralejo, upon Albuhera, where, being supported by the besieging force, the army went into position on the 9th, and preparations were made for a general action. Soult, however, having heard of the fall of Badajoz, commenced a retrograde movement towards the frontiers of Andalusia on the 10th; on which day Major General Le Marchant's brigade, (the fifth dragoon guards, THIRD and fourth dragoons) forming the advance of the British, proceeded to Los Santos, and again in the night to Bienvenida, with the view of gaining the flank of the cavalry of a French corps (General Drouet's) encamped between Usagre and Villa Garcia; but the enemy retreated. The BRIGADE, however, defiled under cover of some heights, and by a flank movement came up with the French on the 11th in front of _Llerena_, charging and driving them into that town with the loss of one hundred and fifty prisoners, including several officers. Intelligence was received of the advance of Marshal Marmont, on the north of Portugal. This general, leaving Ciudad Rodrigo and Almeida, on his rear, had pushed on as far as Castello Branco, thus threatening to destroy the communications of the British, by cutting the bridge of boats at Villa Velha. It therefore became necessary to reinforce the few troops left on that frontier, and Major General Le Marchant's brigade was one of those ordered for this service. It marched through Elvas, Estremos, Crato, Niza, and Villa Velha to Castello Branco, and finally took up its quarters at Val-de-rosa; but Marmont having retired into Spain on the approach of the British, the brigade returned to the Alemtejo, and was, on the 12th of April, stationed at Cabeca de Vide, Crato, and Fronteira, the KING'S OWN being at the former place. On the 29th they received a sudden order to join a brigade of light cavalry, for the purpose of covering Lieut.-General Hill in his attack upon the tête-de-pont and bridge of boats at Almaraz, which brilliant exploit having been effected, the regiment returned to Cabeca de Vide on the 27th of May.