 The 1st battalion embarked for India in April 1805 and took part in the closing stages of the Siege of Ryghur in May 1818 and most of the Siege of Asirgarh in March 1819 during the Third Anglo-Maratha War.Meanwhile, the 2nd battalion embarked for Portugal in November 1810 for service in the Peninsular War and fought at the Battle of Barrosa in March 1811 and the Siege of Tarragona in June 1813 before taking part in operations on the East coast of Spain in the closing stages of the War.The battalions were amalgamated again in May 1817.