In June, when the army took the field, the TWELFTH Light Dragoons proceeded to the vicinity of Ciudad Rodrigo, and subsequently advanced upon _Salamanca_, from whence the French were driven; the regiment, having crossed the Tormes below that city, with the column under Lieut.-General Sir Thomas Picton, advanced, by St. Christoval, along the road to Toro, and after skirmishing with the French rear-guard, took the outposts in front of St. Christoval, where the army was placed in position during the siege of the forts. After the capture of the forts at Salamanca, the army advanced to the bank of the Douro, and the French under Marshal Marmont were posted on the opposite side of the river. In the middle of July the French passed the Douro, when Lord Wellington united his centre and left on the Guarena; but caused two divisions, and Major-General Anson's brigade of cavalry, to halt at _Castrejon_, on the Trabancos, under Lieut.-General Sir Stapleton Cotton. The TWELFTH Light Dragoons arrived at Castrejon on the 17th of July, and in the evening the piquet under Captain Dickens was attacked. On the following morning at day-break, the out-posts were driven in, and the French appeared in great force; the cavalry formed in front of the infantry, but afterwards advanced towards the river and some sharp skirmishing occurred. Lord Wellington arriving, the whole were directed to retire behind the Guarena, which was executed with little loss. The TWELFTH Light Dragoons had five rank and file, and eight horses killed; Adjutant Getterick, twelve rank and file, and four horses wounded; one rank and file and three horses missing. The TWELFTH Light Dragoons were actively employed during the operations which followed the retreat behind the Guarena, and on the 20th of July, when the opposing armies were moving parallel to each other, Captain Barton's squadron suffered from a cannonade; this squadron furnished the out-posts at night. The army subsequently withdrew to the vicinity of _Salamanca_, where a general action was fought on the 22nd of July. The TWELFTH Light Dragoons were stationed on the left, and not far from the rocky Arapiles, and they had the honor of taking part in the overthrow of the French army. The regiment charged twice in the evening, and broke some French infantry, after which a squadron under Captain Andrews moved to Huarte. Its loss was Captain Dickens, one serjeant, one rank and file and one horse killed; two rank and file and three horses wounded. On the day after the battle, the TWELFTH joined the other regiments of the brigade, which had been in pursuit of the enemy's rear-guard, and following the French army in its retrograde movement, arrived at the ancient city of Valladolid, in Leon, on the 30th of July. The pursuit was not continued; but the Marquis of Wellington left a small force in the neighbourhood of Valladolid, including the TWELFTH Light Dragoons, and marched with the army to Madrid, a distance of about one hundred miles.