Columbia subject headings:
Military education--United States.
United States. Army--Recruiting, enlistment, etc.--World War, 1914-1918.
Harvard subject headings:
Military education--United States
United States. Army--Recruiting, enlistment, etc.--World War, 1914-1918.
Princeton subject headings:
Military education--United States.
United States. Army--Recruiting, enlistment, etc.--World War, 1914-1918.