 The two battalions were again engaged against the Marathas during the Third Maratha War of 1817–19, which decisively broke the Maratha power in India.The regiment also made overseas forays, when the 2nd and 10th Battalions took part in the expeditions to Bourbon Island and Mauritius in the Indian Ocean in 1810, and the 3rd and 5th served in the First Anglo-Burmese War of 1824–26.In 1840, the 1st and 2nd Battalions took part in the First Anglo-Chinese War.