In 1714 the regiment was converted to conventional infantry as Charles Willis's Regiment of Foot and deployed to Ireland later that year. The regiment was sent to Menorca on garrison duty in 1724 and was again in Gibraltar during the siege of 1727. The regiment served in Ireland again from 1732 to 1743 and then sailed with the expedition under General James St Clair to capture the Breton port of Lorient in September 1746 during the War of the Austrian Succession: they also destroyed the French fortifications near Quiberon and returned to England. Troops from the regiment served as marines again on board Lord Anson's fleet at the First Battle of Cape Finisterre in May 1747. The regiment was sent to Ireland again in 1749.