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 battalion participated in Ireland from 1732 to 1743 and subsequently joined the expedition under General James St Clair to seize the Breton port of Lorient in September 1746 during the War of the Austrian Succession: they also demolished the French fortifications near Quiberon and returned to England. Troops from the battalion served as marines once more on board Lord Anson's fleet at the First Battle of Cape Finisterre in May 1747.