A second battalion was raised in Ireland in August 1804. The 1st Battalion embarked for Hanover in December 1805 but lost its colours in a storm off Holland. After service in Germany the battalion returned to England in February 1806. The battalion sailed for South America in spring 1807 and took part in the disastrous expedition under Sir Home Popham. It sailed for the Cape of Good Hope later that year and then transferred to Ceylon in 1808. It took part in the Invasion of Isle de France in November 1810, the Invasion of Java in August 1811 and the Invasion of Sumatra in March 1812. It transferred to Madras in India in 1815 and re-absorbed the 2nd Battalion in November 1816.