Career
Educated privately at Bishops Cannings in Wiltshire, Sloper was commissioned into the 10th Dragoons being promoted to Major in 1755. He was appointed Commanding Officer of 1st King"s Dragoon Guards in 1759 and subsequently saw service in Flanders and Germany. In 1778 he was deployed to Ireland and from 1779 he was sent to India seeing service in the Second Anglo-Mysore War as well as the Third Anglo-Mysore War.
In 1785 he became Acting Commander-in-Chief in Madras and from July 1785 he was appointed Commander-in-Chief, India.
He was promoted to full General in 1796. He lived at West Woodhay House at West Woodhay in Berkshire and is buried at Saint Martin"s Church in East Woodhay in Hampshire.