The second battalion of the Ninth had been in garrison at Gibraltar since July, 1809, and to it Colin Campbell was transferred some time in the course of the following year. In the beginning of 1811 the French Marshal Victor was blockading Cadiz, and General Graham (afterwards Lord Lynedoch) determined on an attempt in concert with a Spanish force to march on his rear and break the blockade. Landing at Tarifa he picked up a detachment, which included the flank companies of the Ninth in which Campbell was serving. Graham's division of British troops was now somewhat over four thousand strong, and the Spanish army of La Peña was at least thrice that strength. The allied force reached the heights of Barrosa on March 5th. Graham anxiously desired to hold that position, recognising its value; but he had ceded the command to La Peña, who gave him the order to quit it and move forward. In the conviction that La Peña himself would remain there, he obeyed, leaving on Barrosa as baggage-guard the flank companies of the Ninth and Eighty-Second regiments under Major Brown. Graham had not gone far when La Peña abandoned the Barrosa position with the mass of his force. Victor had been watching events under cover of a forest, his three divisions well in hand; and now he saw his opportunity. Villatte was to stand fast; Laval to intercept the return of the British division to the height; Ruffin to seize the height, sweep from it the allied rear-guard left there, and disperse the baggage and followers. Major Brown held together the flank companies he commanded, and withdrew slowly into the plain. Graham promptly faced about and made haste to attack. Brown had sent to Graham for orders, and was told that he was to fight; and the gallant Brown, unsupported as he was, charged headlong on Ruffin's front. Half his detachment went down under the enemy's first fire; but he maintained the fight staunchly until Dilke's division came up, when the whole, Dilke's people and Brown's stanch flank companies, "with little order indeed, but in a fierce mood," in Napier's words, rushed upwards to close quarters. The struggle lasted for an hour and a half and was "most violent and bloody"; only the unconquerable spirit of the British soldiers averted disaster and accomplished the victory. Many a fierce fight was Colin Campbell to take part in, but none more violent and bloody than this one on the heights of Barrosa. His record of his own share in it is characteristically brief and modest: "At the battle of Barrosa Lord Lynedoch was pleased to take favourable notice of my conduct when left in command of the two flank companies of my regiment, all the other officers being wounded."