Columbia subject headings:
Harvard subject headings:
Germany--Armed Forces--History--20th century.
Hitler, Adolf, 1889-1945
Soviet Union--History--German occupation, 1941-1944.
World War, 1939-1945--Campaigns--Soviet Union.
World War, 1939-1945--Soviet Union--History.
Princeton subject headings:
Foreign enlistment--Germany--History--20th century.
Germany--Armed Forces--History--World War, 1939-1945.
Military service, Voluntary--Germany--History--20th century.