author
Oliver Schoonmaker
1882–1968
Best known as a co-author of early 20th-century U.S. Army manuals, this little-known writer worked close to the practical world of military training and transport. His surviving books have the feel of firsthand instruction, built for officers who needed clear guidance rather than grand theory.
1 Audiobook
Military Instructors Manual
by J. P. (James Perry) Cole, Oliver Schoonmaker
About the author
Oliver Schoonmaker (1882–1968) is a fairly obscure figure today, but the historical record clearly connects him with American military writing during the First World War era. Library of Congress records list him as joint author, with J. P. Cole, of Military Instructors Manual (1917), and archive records also identify him as the author of The Supply Train; Its Organization and Work (1918), written with William D. June.
Those books suggest a writer with direct knowledge of military organization, instruction, and logistics. Rather than literary works in the usual sense, they were practical guides meant to help officers and trainers do their jobs effectively, which gives Schoonmaker a distinct place among early 20th-century nonfiction authors.
Some later sources also describe him as a military leader and an educator, and one reference links him with the Theosophical Society in Pasadena. Because the surviving online record is limited, the clearest confirmed picture is of an author whose published work grew out of professional experience and wartime service.