Meanwhile, the 2nd battalion, which was formed in 1803, saw service initially in Ireland and was then posted to Jersey in April 1804 serving there until 1809. They deployed from Jersey to Portugal arriving in Lisbon on 2 July 1809. The regiment initially deployed as garrison troops for Lisbon. The battalion's headquarters were based at Vila Nova on the northern edge of Lisbon; it fielded some nine companies. One company was commanded by Captain Adam Ferguson. During the autumn of 1810 the newly formed "Fighting 3rd Division" led by General Thomas Picton, had the 2nd Battalion of the 58th Foot placed under its command and ordered it to move to a defensive position at the Lines of Torres Vedras. The battalion then advanced with the 3rd Division and in April 1812 saw action at the Battle of Salamanca in July 1812, the siege of Burgos in September 1812 and the Battle of Vitoria in June 1813. It then pursued the French Army into France and saw action at the Battle of the Pyrenees in July 1813, the Battle of Nivelle in November 1813 and the Battle of the Nive in December 1813 as well as the Battle of Orthez in February 1814. The 2nd battalion were ordered to be reduced in establishment or disbanded on 24 December 1815.