First World War

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Across
  1. 3. Mutual agreement between two countries
  2. 5. Franz Ferdinand legal title
  3. 6. Vapour use used especially to disable an enemy
  4. 8. Competition between nations for superiority
  5. 9. Airship used by the Germans
  6. 10. Name of the Butcherof Somme
  7. 12. Name of the Defense of the realm act
Down
  1. 1. country which entered the war in 1917
  2. 2. Name of the German tactical plan
  3. 4. Battle where Churchil failed
  4. 7. Disease suffered by soldiers in the trenches
  5. 11. Country that broke the alliance when the War began