World War I

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Across
  1. 4. an agreement in a war to stop fighting
  2. 6. A coalition of countries led by Germany, Austria-Hungary the Ottoman Empire and Bulgaria
  3. 10. the longest battle during WWI
  4. 11. Long narrow ditches dug into the ground
  5. 13. an armored fighting vehicle
  6. 14. Ace German Pilot
  7. 15. A coalition of countries led by France, Britain, Russia, Italy and Japan
Down
  1. 1. Austria-Hungarian Heir spark of WWI
  2. 2. Area between the Trenches
  3. 3. Soldiers that fought on horseback
  4. 5. A plan that Germany had to prepare on fighting on two fronts
  5. 7. Secret Military society in Serbia
  6. 8. Peace Agreement that ended WWI
  7. 9. A German Aircraft used in bombings
  8. 12. Political and social Revolution