Columbia subject headings:
Fackenheim, Paul Ernst, 1892-
Spies.
World War, 1939-1945--Jews.
Harvard subject headings:
Fackenheim, Paul Ernst.
Jewish soldiers--Germany--Biography.
Jews--Germany--Biography.
Spies--Germany--Biography.
Princeton subject headings:
Fackenheim, Paul Ernst, 1892-
Spies.
World War, 1939-1945--Jews.