Columbia subject headings:
Soviet Union--Armed Forces.
Soviet Union--History--1939-1945.
Strategy.
Surprise.
Harvard subject headings:
Soviet Union--Armed Forces.
Soviet Union--History--1939-1945.
Strategy
Surprise.
Princeton subject headings:
Ambushes and surprises.
Lightning war.
Offensive (Military science)
World War, 1939-1945--Campaigns--Soviet Union.