Columbia subject headings:
Harvard subject headings:
Torpedo-boats--Germany.
World War, 1939-1945--Naval operations, German.
Princeton subject headings:
Germany. Kriegsmarine. Torpedobootflottille, 9.
Torpedo-boats--Germany.
World War, 1939-1945--Campaigns--Mediterranean Sea.
World War, 1939-1945--Naval operations, German.