Columbia subject headings:
Germany--History, Military--20th century.
Japan--History, Military--20th century.
Military history, Modern--20th century.
United States--History, Military--20th century.
Harvard subject headings:
Germany--History, Military--20th century
Japan--History, Military--20th century.
Military history, Modern--20th century
United States--History, Military--20th century
Princeton subject headings:
Japan--History, Military--20th century.
Military history--20th century.
United States--History, Military--20th century.