Career
Barrell joined the Army as a captain on 27 March 1698. He served with distinction in the War of the Spanish Succession and was granted brevet rank as a colonel of Foot by the Duke of Marlborough on 1 January 1707. In 1715 he was made colonel of the 15th Regiment of Foot, and in 1727 he was promoted to brigadier-general.
On 25 August 1730 he was removed to the 22nd Regiment of Foot, and on 8 August 1734 to the King"s Own.
He was promoted to major-general in 1735 and lieutenant-general in 1739. He also held the post of Governor of Pendennis Castle.
