Battle of Blitzkrieg

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Across
  1. 5. Lightning war
  2. 7. A eastern European country
  3. 8. A German Submarine used in World War I and World War II
Down
  1. 1. Occupy or to enter
  2. 2. A violent attack
  3. 3. Leader of Germany
  4. 4. a shipped equipped with weapons designed to take part in war at sea
  5. 6. A western European country