This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Original Published by: Macmillan Co. in 1915 in 194 pages; Subjects: War; World War, 1914-1918; Psychology, Military; History / Military / General; History / Military / World War I; History / Military / World War II; Political Science / Peace; Technology & Engineering / Military Science;