 The regiment served as marines from March 1744 to September 1746 when it took part in the Raid on Lorient during the War of the Austrian Succession.The regiment then spent another two years serving as marines and then returned to Ireland.On 1 July 1751 a royal warrant was issued which provided that in future regiments would no longer be known by their colonel's name, but would bear a regimental number based on their precedence