World War I and World War II

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Across
  1. 3. Type of gas used in chemical warfare
  2. 4. Japanese City targeted by U.S. atomic bomb
  3. 7. Hitler's overwhelming invasion strategy
  4. 9. Beach where Allied powers invaded France
  5. 10. boat that was destroyed and changed U.S. views of the war
Down
  1. 1. word used to described total number of dead
  2. 2. peace treaty that effectively ended WWI
  3. 5. This battle disabled the Japanese fleet in WWII
  4. 6. The new type of warfare that appeared in WWI
  5. 8. neither side makes any advancement or retreat