Battalions from the regiment had served in most land conflicts involving British forces since its formation, from the Wars of the Austrian and Spanish successions, through the American war of Independence and various campaigns in India and Africa, the Napoleonic Wars, the Second Boer War and many of the greatest battles of the First World War (the Battle of Mons, the Battle of the Somme, the Battle of Passchendaele, the Battle of Cambrai) and the Third Anglo-Afghan War in 1919. During the Second World War, the regiment fought as part of the British Expeditionary Force in France, forming part of the rearguard at Dunkirk; in North Africa; Italy and in France, following the D-Day landings, and as Chindits in Burma. In Korea, the 'Dukes' desperate defence of the Hook position halted the last major Chinese attempt to break the United Nations Line before the truce, in July 1953, brought the war to an end. In Cyprus the battalion was successful in Operation Golden Rain, destroying a major EOKA terrorist group operating in the Troodos Mountains in 1956. In 1964 the battalion joined the NATO deterrence in Germany on the front line in the Cold War and from 1971 was regularly engaged in 'The Troubles' in Northern Ireland until 1997. They were amongst the first units to cross the border from Kuwait in the 2003 Iraq War.