comparative study of world war casualties : from gas and other weapons / prep. by Harry L. Gilchrist western front : drawings / by Muirhead Bone ; with an introduction by Sir Douglas Haig diary of the great war / by Samuel Pepys Jr., sometime of Magdalen-College in Cambridge, and of His Majesty's Navy Office, Esquire, M.A. ; with … United States Army in the world war 1917-1919 : Policy-forming documents american expeditionary forces / Department of the Army. Historical Division