Columbia subject headings:
Harvard subject headings:
Germany--History, Military--20th century.
Karlsruhe (Germany)--History, Military--20th century.
World War, 1914-1918--Germany--Karlsruhe--History.
Princeton subject headings:
Karlsruhe (Germany)--History--20th century.
World War, 1939-1945--Germany--Karlsruhe.