Columbia subject headings:
Lightning war.
Harvard subject headings:
Germany--History--1933-1945.
Lightning war.
World War, 1939-1945--Campaigns.
World War, 1939-1945--Germany.
Princeton subject headings:
Germany--History--1933-1945.
Lightning war.
World War, 1939-1945--Campaigns.
World War, 1939-1945--Germany.