General Hargrave entered the Army with a commission as an Ensign
on 23rd April 1694 in Viscount Charlemonte’s Regiment of
Foot with whom he served in the Low Countries from 1694 - 1696.
A Lieutenant in 1702, he fought in the War of the Spanish Succession
and other campaigns against the French and the Spanish. He took
part in the expeditions to Cadiz and Vigo in 1702 and was at the
relief of Barcelona in 1705 and at the Battle of Almanza in 1707.
Appointed a Brevet Colonel on 15th November 1711, he was present
in the Rebellion of 1715 at the battle of Sheriffmuir. He was
appointed Colonel of the 31st Regiment on 1st January 1730, transferring
to the 9th Foot on 27th January 1737. On 27th August 1739 he became
Colonel of The Royal Fusiliers.
He died a Lieutenant General on 21st January 1751 and was buried
in Westminster Abbey.