Bird, W. D. The direction of war : a study of strategy / by W. D. Bird. - Cambridge, [Eng.] : The University Press, 1920. - xii, 317 p., 13 leaves of fold. plates : ill., maps ; 24 cm. - Cambridge naval and military series. . Includes index. Subjects--Topical Terms: MCEStrategy. Dewey Class. No.: 355.4 / BIR