Meanwhile, the 2nd Battalion took part in the disastrous Walcheren Campaign in autumn 1809. The battalion embarked for Portugal for service in the Peninsular War in August 1813. Pursuing the French Army into France, it saw action at the Battle of the Bidassoa on October 1813, the Battle of Nivelle in November 1813 and the Battle of the Nive in December 1813. The battalion returned to England, where it was absorbed by the 1st Battalion in 1819.