Following the 1751 reforms that standardised naming and numbering of regiments, it became the 23rd Foot (Royal Welsh Fuzileers). In the opening battle of the Seven Years' War, it was part of the Minorca garrison that surrendered to the French in June 1756; given free passage to Gibraltar, from 1758 it campaigned in Germany. At Minden in August 1759, it was one of the infantry units that routed the French cavalry, an achievement still celebrated as Minden Day by their successor unit, the Royal Welsh. Between 1760 and 1762, it fought in the battles of Warburg, Kloster Kampen 1760 and Wilhelmsthal in June 1762, before the war ended with the 1763 Treaty of Paris.