World War One Crossword

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Across
  1. 3. A heavy vehicle that could withstand gunfire
  2. 5. Name of the ship sunk by German U-boats that led to the US entering WWI
  3. 6. Act that required men to register with the government and be randomly selected for military service
  4. 7. Canon that shot Paris, France from 75 miles away
  5. 8. A foot condition caused by the unhygienic place the soldiers were in
  6. 10. Type of combat where both sides dig trenches for protection against each other
  7. 13. What does the "I" in MAIN stand for?
  8. 17. What does the "N" in MAIN stand for?
  9. 20. Battle of ______ (longest battle fought in wwi)
  10. 22. What does the "A" in MAIN stand for?
  11. 23. Plane with three wings
  12. 24. Battle of _____ (deadliest day in British history)
Down
  1. 1. Hundred Days _________ (surprise attack on Germany led by the Allies)
  2. 2. Battle in which Germans advanced so fast that they ran out of supplies
  3. 4. System that had merchant ships sail under the protection of larger ships
  4. 9. The stance that the US took at the beginning of the war
  5. 11. Also known as "shell shock"
  6. 12. Trenches were usually built in a ______ design
  7. 14. Most used type of gas in WWI
  8. 15. What does the "M" in MAIN stand for?
  9. 16. Space between trenches
  10. 18. German submarine
  11. 19. Treaty of __________ (Treaty that ended WWI
  12. 21. Archduke _____ Ferdinand