Columbia subject headings:
United States. Army--History--World War, 1914-1918.
World War, 1914-1918--United States.
Harvard subject headings:
United States. Army--History--World War, 1914-1918.
World War, 1914-1918--United States
Princeton subject headings:
United States. Army--History--World War, 1914-1918.
World War, 1914-1918--United States.