In the long history of Irish regiments serving with the British Army, few units have acquired more battle honours than the Royal Irish Regiment, ranging from Marlborough's great victories in the 18th century to the Crimean and Boer Wars. This volume covers the actions of the regiment's nine battalions in the Great War, in which it saw continuous action from the first battle (Mons) to the last (Hindenburg LIne). As well as service in all the major and minor battles in France and Flanders - Marne, Aisne, the three Ypres; the Somme; Messines; Passchdendaele and Cambrai, the regiment served in other theatres including Gallipoli; Macedonia; and Palestine. It is a proud record to which this history does full justice, with appendices on the distinguished Colonels of the regiment (including Field Marshal Sir John French) and Rolls of Honour.