In 1671 Jones obtained permission to expand the Gens d'Armes into a full-sized light cavalry regiment under his own command. The regiment known as "Sir Henry Jones's Regiment of Light Horse" or the "English Regiment of Light Horse in France" was about 500 strong. Jones was its first colonel and Ferdinando Lyttelton its first lieutenant-colonel. Jones tried to recruit men from his own troop in the Royal Horse Guards; much to his annoyance, there were few volunteers. Jones was killed by a bullet through the throat whilst he was attending the Duke of Monmouth at the siege of Maastricht in 1673.