Then, in the spring of 1811, the enemy retired to the northward and westward; and a force under Marshal Beresford was sent to intercept communications from the south. The Thirteenth formed part of this force, and while under Beresford’s orders it had the luck to be engaged in a brilliant affair which has since formed the subject of much controversy. The town of Campo Mayor had been taken by the French under Latour Maubourg, and was occupied by a force of 1200 Infantry and over 800 Cavalry, with some Horse Artillery and a battery train of sixteen heavy guns. On Beresford’s approach this force evacuated Campo Mayor and retreated on Badajos, ten miles away. The British Cavalry was sent in pursuit and overtook the enemy. The action that ensued is not altogether easy to understand; but the Thirteenth charged, and after some very gallant hand-to-hand fighting, broke the opposing French Cavalry, pursuing them up to the gates of Badajos, capturing the whole siege train, with great quantities of waggons and stores, and leaving the rest of the garrison to be followed up and secured by Beresford’s heavy Cavalry and guns. The Thirteenth were naturally pleased and proud at their success against a very superior enemy; but, by a mistake which was not fully explained at the time, the advance was stopped, and the Thirteenth given up for lost. They rejoined the force in safety; but Beresford, misled by false information, believed they had shown want of discipline after the charge, and reported in that sense. Wellington, at a distance, and as Fortescue says, “always justly sensitive over the ungovernable ardour of his Cavalry,” accepted Beresford’s view, and referred to the Thirteenth in stinging words. “Their conduct,” he wrote, “was that of a rabble, galloping as fast as their horses could carry them over a plain after an enemy to which they could do no mischief after they were broken.... If the Thirteenth Dragoons are again guilty of this conduct, I shall take their horses from them, and send the officers and men to do duty at Lisbon.” This threat was not communicated to the Regiment, Beresford having meanwhile learnt something of the truth; but the Thirteenth were nevertheless severely censured for impetuosity and want of discipline. This censure, as may be supposed, they deeply resented. Napier, in his ‘History of the Peninsular War,’ says that “the unsparing admiration of the whole army consoled them.” No doubt to some extent it did, but not entirely.