Can you solve this puzzle?

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Across
  1. 2. The largest amphibious assault in history
  2. 6. The Japanese attack on the U.S. naval base in Hawaii in 1941
  3. 7. The evacuation of Allied troops from France
  4. 8. The German air force during World War II
Down
  1. 1. The turning point battle in the Soviet Union
  2. 3. the tactic used by the Germans
  3. 4. The code-breaking site in England
  4. 5. The British Prime Minister during most of World War II