At the opening of the brilliant campaign of this year, the regiment marched towards _Salamanca_, and was employed in the operations by which the French troops were driven from that city on the 26th of May. The numbers and improved organization of the allied army enabled the British commander to drive the enemy before him with a strength and violence which the French could not withstand. Rivers were crossed, rocks and mountains were climbed, and barren tracts traversed, with so little opposition, that the power of the enemy appeared to be paralyzed; but in the plains of _Vittoria_ Joseph Bonaparte made a stand, and the THIRTEENTH Dragoons took part in the engagement on the 21st of June, when the French army sustained a decisive overthrow. The regiment supported the attacks of the infantry on this occasion, and subsequently received orders to advance and act as opportunities might occur. After clearing various obstacles in their front, the THIRTEENTH approached Vittoria, when the royal carriages were perceived, and Major-General Long instantly ordered a squadron, commanded by Captain Doherty, to pursue them; this was promptly executed, and the whole were captured after a sharp skirmish, in which private _Michael Sullivan_ distinguished himself, cutting down a French officer and capturing his horses. In the mean time, the remainder of the regiment had formed in front of a compact body of the enemy, whom they vigorously charged and routed. Captain Doherty, observing this movement, left the royal carriages in charge of serjeant Scriven and twelve men, and joined the regiment, with which he continued in close pursuit of the enemy during the remainder of the day. Serjeant Scriven reported his having given up the royal carriages to an officer, with a party of infantry, who said he had orders to take charge of them, but he omitted taking a receipt or demanding the officer's name. The commanding officer of the regiment, Major Patrick Doherty, received a gold medal for this battle. Following the rear of the French army, the regiment arrived at the foot of the Pyrenees, and entering the pass through these celebrated mountains, near Pampeluna, to furnish posts of correspondence between the different divisions, it proceeded to the valley of Roncesvalles,--a place celebrated for the defeat of Charlemagne by the Duke of Gascony, assisted by the Saracens; a pillar erected on the spot, to commemorate the victory, was destroyed by the French in 1794. Up this valley the French army, commanded by Marshal Soult, advanced on the 25th of July, and some sharp fighting occurred, which ended in the retreat of the British to a position in the mountains in front of Pampeluna. The regiment, excepting one troop detached to assist in the blockade of Pampeluna, was formed in support of the sixth division during the severe contest in the _Pyrenees_, and when the French were repulsed they were pursued to the confines of their own country.