Pierre's World War 1 Cross Word

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Across
  1. 3. A type of German submarine
  2. 5. Boards which were laid down on the trench floor
  3. 7. mans land - Unoccupied area
  4. 9. A military monoeurve
  5. 10. Archduke Franz Ferdinand
  6. 13. The areas of countrys where no fighting took place but civilians contributed to the war effort
  7. 15. A major military attack
  8. 16. patrols Practice of keeping guard at night
  9. 17. Alliance 3 countrys uniting
Down
  1. 1. Shaped projectile that flies through the water and blows up other ships
  2. 2. Name given to the rough living space
  3. 4. Projectile shot out by exploding artillary shells
  4. 6. Spying,Gathering Information
  5. 8. Soliders level in the army
  6. 10. What goes into a gun
  7. 11. Artillary fires what?
  8. 12. Most exposed foot
  9. 14. Soldiers who fight on foot