The 51st Regiment was originally raised in 1754 as the 51st (American Provincials) and was disbanded in 1755, to be raised as the 53rd Regiment (Napier's) by the Marquis of Rockingham. In 1757 it was renamed the 51st Regiment (Brudenell's).Raised in the West Riding of Yorkshire, it has had the strongest possible association with that area ever since, becoming the 51st (2nd Yorkshire, West Riding) Regiment in 1782.It was in the Seven Years’ War (1756-63) that, at the Battle of Minden (1759), the Regiment gained its first, and perhaps most well known, battle honour. The victory at Minden is celebrated every year on 1st August when white roses are worn in the headdress, symbolising the roses allegedly plucked by soldiers of the Regiment at Minden.
From 1771 to 1782 the 51st Regiment of Foot was in Minorca and it was there in 1777 that the young Ensign John Moore joined them. After service in Ireland, Gibraltar and Corsica the 51st returned to England for a brief stay before embarking for Spain in 1807.The Regiment distinguished itself at Lugo and Corunna and, in tribute to their former commander General Sir John Moore and recognition of their involvement, the 51st was formed into a Light Infantry Corps in 1809 which was officially confirmed in a letter from Horse Guards on 2nd May 1809:"His Majesty had been pleased to approve of the 51st Regiment being immediately formed into a Light Infantry Corps upon the same plan as the 43rd, 52nd, 68th, 71st and 85th regiments".