The 1st battalion embarked for the Peninsular in June 1808 and saw action at the Battle of Roliça in August 1808, the Battle of Vimeiro later in August 1808, and the retreat to Corunna under Lieutenant-General Sir John Moore in June 1809. The 1st battalion also took part in the disastrous Walcheren Campaign in autumn 1809. The 1st battalion returned to the Peninsular in spring 1812 and took part in the Battle of Salamanca in July 1812, the siege of Burgos in September 1812, and the Battle of Vitoria in June 1813 as well as the siege of San Sebastián in September 1813. It then pursued the French Army into France and fought at the Battle of Nivelle in November 1813, at the Battle of the Nive in December 1813 and at the Battle of Orthez in February 1814 as well as at the Battle of Toulouse in April 1814 and at the Battle of Bayonne later in April 1814. Meanwhile, the 2nd battalion took part in the Battle of Bussaco in September 1810 and the siege of Badajoz in March 1812.