The 2nd Battalion remained on home service until 1809, with garrison postings in England, Jersey, and Ireland. In 1808 it was raised to an establishment of 1000 men, rather than the lower home service establishment of 600, and in early 1809 was ordered to sail for Corunna, in Spain, for service in the Peninsular War. It was recalled while at sea, following the British defeat at the Battle of Corunna, and then sailed successfully for Lisbon, arriving safely in Portugal on 6 April 1809. It was put under the command of Brigadier Alan Cameron, alongside the 1st Battalion of the 9th Foot.