practicable, and Sebastiani’s whole corps was left in its old posts in the kingdom of Granada. [47] Belonging to that division of the Army of the Centre under Dessolles which Soult had borrowed for the conquest of Andalusia, and which King Joseph, despite of many demands, could never get back. The invasion of Estremadura was carried out in two columns of about equal strength, which used the two main passes between Western Andalusia and the valley of the Guadiana. The right column under Latour-Maubourg took the route by Guadalcanal, Llerena, and Usagre; it was composed of his own regiments of dragoons from the 1st Corps, and of Girard’s infantry division of the 5th Corps, which latter had been cantoned in Llerena since the autumn, and was now picked up and taken forward by the cavalry. The left column, which was accompanied both by Soult and by Mortier, was composed of Briche’s light cavalry and Gazan’s division of the 5th Corps. It had to escort the slowly moving siege-train of 34 guns, which (with the 60,000 kilos of powder belonging to it) was drawn by 2,500 draught oxen, requisitioned along with their drivers from the province of Seville. This column took the route Ronquillo, Sta Olalla, Monasterio, which, if less steep and better made than the Llerena-Guadalcanal road, is longer, and passes through an even more desolate and resourceless country. It was intended that the two columns should join at Los Santos or Almendralejo, in the Estremaduran plain, and lay siege at once to Badajoz, the enemy’s most formidable stronghold. Its fall, so Soult hoped, would lead to the easy conquest of the minor fortresses.