History of the First World War.
- [Enlarged ed.]
- London, Cassell, 1970.
- 635 p. maps. 25 cm.
First published in 1930 under title: The real war, 1914-1918. Enl. ed. published in 1934 under title: A history of the World War, 1914-1918. Companion vol. to his History of the Second World War.