Columbia subject headings:
Harvard subject headings:
Asia--Strategic aspects.
Japan--Military policy.
Military intelligence--Great Britain--History--20th century
World War, 1914-1918--Military intelligence--Great Britain.
World War, 1939-1945--Causes.
Princeton subject headings:
Military intelligence--Great Britain--History--20th century.
World War, 1914-1918--Military intelligence--Great Britain.
World War, 1939-1945--Military intelligence--Great Britain.