To dislodge 14,000 men and twenty guns in position with 3,000 men and six guns was of course a military impossibility. But Chabert had the excuse that he did not, and could not, know what he was doing. His attempt was of course doomed to failure: his battery was blown to pieces by the Spanish guns, acting from a concentric position, the moment that it opened. His four battalions, after pushing back Coupigny’s skirmishing line for a few hundred yards, were presently checked by the reserves which the Spaniard sent forward. Having come to a stand they soon had to retire, and with heavy loss. The brigade drew back to the cover of the olive groves behind it, leaving two dismounted guns out in the open. Behind Chabert the enormous convoy was blocking the way as far back as the bridge of the Rumblar. Five hundred wagons with their two or four oxen apiece, took up, when strung along the road, more than two and a half miles. Dupont, who rode up at the sound of the cannon, and now clearly saw the Spanish line drawn up on a front of two miles north and south of the road, realized that this was no skirmish but a pitched battle. His action was governed by the fact that he every moment expected to hear the guns of Castaños thundering behind him, and to find that he was attacked in rear as well as in front. He accordingly resolved to deliver a second assault as quickly as possible, before this evil chance might come upon him. With some difficulty the Swiss battalions, Dupré’s brigade of light cavalry, and Privé’s dragoons pushed their way past the convoy and got into the open. They were terribly tired, having marched all night and covered fifteen miles of bad road, but their general threw them at once into the fight: Pannetier’s brigade and the Marines of the Guard were still far to the rear, at or near the bridge of the Rumblar.