The official guide to the American-made Lewis Gun - the standard machine gun employed by the British army in the middle and later stages of the Great War. There are chapters on the gun's characteristics, the duties of officers in charge of the guns; the use of Lewis guns in offensive and defensive trench to trench attacks as well as in open warfare; and the employment of Lewis guns against aircraft. With appendices on firing the gun from the hip; ammunition; drill and instructions (and photographs) showing the correct carrying of Lewis Gun magazines this booklet tells you all you need to know about this famous gun.