Within months of its original raising the regiment was despatched to join Marlborough's army in Holland. After five months and only two battles it was sent to Portugal, along with five other of Malborough's best regiments, where it remained for the next six years. The 33rd fought in many battles including Valencia de Alcantara (1705), Zaragossa (1710), and less favourably at Almansa and Brihuega. It was only one of the two foot regiments not to be disbanded and in 1743 the regiment was sent to Germany, where it distinguished itself in the Battle of Dettingen, gaining its first battle honour, then again at the Battle of Fontenoy in 1745 and again in Rocoux and Lauffeld in 1747. During the late 18th century, the regiment gained the familiar nickname The Havercakes, due to its sergeants carrying oatcakes on the tip of their swords to attract new recruits.