World War 1

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Across
  1. 4. A state when no army can progress
  2. 7. The Goat of all wars
  3. 11. German Soldier
  4. 12. the bad guys
  5. 14. A form of PTSD after a shelling
  6. 17. Yellow poisonous gas
  7. 18. A German bomber
  8. 19. Close range air to air combat
  9. 20. A British soldier
Down
  1. 1. Less intense version of Nationalism
  2. 2. An agreement to stop fighting
  3. 3. A heavy concentration of artillery fire
  4. 5. Popular warfare fighting style
  5. 6. An ambulance
  6. 8. The good guys
  7. 9. What my definition of the USA is
  8. 10. armored vehicle used in battlefields
  9. 13. A heavy barrage of being fired upon
  10. 15. Sleeper of the Allies
  11. 16. A group travelling together for protection