Columbia subject headings:
France--Foreign relations--1914-1940.
France--History, Military--20th century.
France--Politics and government--1914-1940.
France. Armée--History--20th century.
Harvard subject headings:
Princeton subject headings:
France--History--1914-1940.
France--History--German occupation, 1940-1945.
France--Politics and government--1914-1940.