In July, the 1st Battalion took part in the Battle of Salamanca, a decisive victory for the British, and then subsequently took part in the Siege of Burgos which ended in October. In 1813, the 2nd Battalion took part in an expedition to the Low Countries, while back in Spain, the 1st Battalion took part in the Battle of Vittoria in which the British and Allied forces won a resounding victory over the French, as well as at the bloody Siege of San Sebastian, where the British besieged San Sebastián from July to August, after two bloody assaults by the British troops. After fighting so hard against the French in Portugal and Spain, in late 1813, the British finally pushed into France itself, where the 1st Battalion took part in a number of successful engagements, including at Nive. Napoleon would eventually abdicate in April 1814.