To many it would later seem as if the rule book of war had been torn up and thrown away. The First World War is usually characterised as a static war of attrition, but by the end of the war a new doctrine of fire and movement emerged with the squad as the key tactical unit, marking a fundamental shift in methods of warfare in the twentieth century. As late as March 1918, assault detachments used these tactics to destroy the British 5th Army and take 50, 000 prisoners. Stephen Bull traces the development of German storm tactics in the context of trench warfare waged with new technology: improved machine guns and machine-gun tactics, super-heavy artillery, flamethrowers and gas. The legend of German stormtroopers has proved powerful and enduring. They were central to Blitzkrieg, and Hitler styled them as elite soldiers – living examples of Nietzschean supermen. However, as Bull demonstrates, these tactics did not appear out of nowhere, they represented a general shift in tactical thought during the First World War. Drawing upon German, French and British tactical manuals, German Assault Troops of the First World War considers a watershed in the history of the infantry.