German Infantry Regiment 66 fought in most of the major battles of the First World War: Le Cateau, the Marne, Arras, the Somme, and the March offensive of 1918. This official regimental history, written in 1930 by Major Otto Korfes, an officer in the regiment for most of the war, incorporates the personal testimonies of many soldiers. Illustrated with maps and pencil sketches throughout, it presents a vivid first-hand account of the conflict from a German perspective.