A second battalion was raised in 1803 to increase the strength of the regiment. The 1st battalion left for India in April 1805 where it undertook a punitive expedition to the Fortress of Callinger in Allahabad Province in February 1812. It also helped secure a pyrrhic victory at the Battle of Nalapani in October 1814 during the Anglo-Nepalese War. The 1st battalion also took part in engagements against Pindari forces in 1817 during the Third Anglo-Maratha War and did not return home until July 1823.