The 73rd Carnatic Infantry were an infantry regiment of the British Indian Army. They could trace their origins to 1776, when they were raised as the 13th Carnatic Battalion by drafts of men from the 4th, 7th and the 11th Carnatic Battalions.The regiment's first action was in 1781, during the Battle of Sholinghur and the Battle of Seringapatam in the Second Anglo-Mysore War in 1781.