But the two columns did not meet with equal fortune. That commanded by Latour-Maubourg met practically no resistance in its first stages. On arriving at Usagre on January 3, it found in its front almost the whole of the allied cavalry in Estremadura--Butron with 1,500 Spaniards, Madden with nearly 1,000 Portuguese. But this was merely a screen thrown out to cover the retreat beyond the Guadiana of Mendizabal and the division of Spanish infantry which had been cantoned in this region. That officer had been ordered by his chief, La Romana, to break the bridge of Merida, after retiring over it, and then to attempt to hold the line of the Guadiana. He did neither; precipitately marching on Merida, he passed through it in great haste, but forgot to see that the bridge was duly destroyed, and then retired along the north bank of the Guadiana to Badajoz. Latour-Maubourg, according to his directions, did not cross the river, but halted near Almendralejo, to wait for the other column, which was not forthcoming. Only Soult himself and Briche’s light cavalry appeared at Zafra on the 5th, and joined Latour-Maubourg on the 6th of January. Gazan’s infantry and the siege-train were far away, and unavailable for many a day. The plans of the left invading column had miscarried. For when its head reached Monasterio, at the summit of the long pass, its tail, the siege-train, was dragging far behind. In the desolate stages about Ronquillo and Sta Olalla it had met with tempestuous rains, as might have been expected at the season. Many of the oxen died, the unwilling Spanish drivers deserted wholesale, and there was much delay and considerable loss of vehicles. The train and its small escort got completely separated from Gazan’s infantry. At this moment Soult’s cavalry reported to him that a formidable column of hostile infantry was lying a few miles to the west of Monasterio, on the bad cross-road to Calera, and was apparently moving round his flank, either to fall upon the belated convoy or perhaps to make a dash at Seville.