The irregularity and tardiness of the Spanish movements gave a portentous warning of what might be expected from them in the field. They occupied fifteen hours in executing a moderate march, passing over the ground in a rambling and disorderly manner, that seemed rather like peasants wandering from a fair, than troops moving in the presence of an enemy. La Pena, without waiting to correct his broken ranks, sent on a vanguard to Zayas; while his rear, entirely separated from the centre, was still straggling over the country, and contrary to the expressed wishes of Graham, who implored him to hold Barosa, he declined his advice, and ordered the British to march through the pine wood on Bermeja.
Graham, supposing that Anglona’s division and the cavalry would continue to occupy the hill, leaving the flank companies of the 9th and 82nd to protect his baggage, obeyed the order, and commenced his march. But the astonishment of the British general was unbounded, when, on entering the wood, he saw La Pena moving his entire corps from the heights of Barosa, with the exception of three or four battalions and as many pieces of artillery.
Unfortunately, the British general was not the only person who had observed that Barosa was abandoned. Victor, concealed in the forest of Chiclana, anxiously watched the movements of the allies. He saw the fatal error committed by the Spanish leader, and instantly made dispositions to profit from the ignorance and obstinacy of his antagonist.
The French marshal, having selected three grenadier battalions as reserves, strengthened his left wing with two, and three squadrons of cavalry, while the other was attached to his centre. Ruffin commanded the left, Laval the centre; while Villatte, with two thousand five hundred infantry, covered the camp, and watched the Spaniards at Santa Petri and Bermeja. The cavalry stationed at Medina and Arcos were ordered by Victor to move on Vejer and cut off the allies, for on their certain defeat the French general entertained no doubt.
The time was admirably chosen for a decisive movement. The British corps were defiling through the wood, the strength of the Spaniards posted on the Bermeja, another division pursued a straggling march on Vejer, and a fourth, in great confusion, was at Barosa, as a protection to the baggage. Making Villatte’s division a pivot, Victor pushed Laval at once against the British, and ascending the back of the hill with Ruffin’s brigade, he threw himself between the Spaniards and Medina, dispersed the camp followers in an instant, and captured the guns and baggage.
Graham, when apprised of this sudden and unexpected movement, countermarched directly on the plain, to co-operate, as he believed, with La Pena, whom he calculated on finding on the heights, but never was reliance placed by a brave soldier on a more worthless ally. The Spaniard had deceived him; himself was gone, his mob-soldiery were fugitives, Ruffin on the heights, the French cavalry between him and the sea, and Laval close on the left flank of the British.
It was indeed a most perilous situation, and in that extremity the brave old man to whom the British had been fortunately confided, proved himself worthy of the trust. He saw the ruin of retreat; safety lay in daring, and though the enemy held the key of the position with fresh troops, Graham boldly determined to attack them with his wearied ones.
The battle was instantly commenced. Duncan’s artillery opened a furious cannonade on the column of Laval; and Colonel Barnard, with the rifles and Portuguese caçadores extended to the left and began firing. The rest of the British troops formed two masses, without regard to regiments or brigades; one, under General Dilkes, marched direct against Ruffin, and the other under Colonel Whately, boldly attacked Laval. On both sides the guns poured a torrent of grape and canister over the field; the infantry kept up a withering fire; and both sides advanced, for both seemed anxious to bring the contest to an issue. Whately, when the lines approached, came forward to the charge; he drove the first line on the second, and routed both with slaughter.
Brown had marched at once on Ruffin, and though half his small number had been annihilated by an overwhelming fire, he held his ground till Dilkes came to his assistance. Never pausing to correct their formation, which the ragged hill had considerably disorganised, on came the British desperately; they were still struggling to attain the summit, and approaching the ridge, breathless and disordered, their opponents advanced to meet them. A furious combat, hand to hand, ensued; for a moment victory seemed doubtful, but the British fought with a ferocity that nothing could oppose. Whole sections went down, but still the others pressed forward. Ruffin and Rousseau, who commanded the élite of the grenadiers, fell mortally wounded. The British never paused, on they went, delivering volley after volley, forcing the French over the heights, and defeating them with the loss of their guns.
The divisions of the French commander, though dreadfully cut up, fell back on each other for mutual support, and endeavoured to rally; but Duncan’s guns were moved forward, and opened a close and murderous fire that prevented a possibility of reforming. Nothing could save the shattered battalions from that exterminating cannonade but an instant retreat, and Victor retired, leaving the British in undisputed possession of the field, from which want of food and continued fatigue, while under arms for four-and-twenty hours, of course prevented them from moving in pursuit.