World war one

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Across
  1. 1. What was the name of the gang who assassinated Franz Ferdinand?
  2. 3. World war one was fought in these
  3. 5. The war lasted ____ years
  4. 6. This is the word for when neither side could win the war
  5. 9. The name of the German war plan
  6. 10. Who did Germany invade first in WWI?
  7. 11. Lee Enfield was the name of this type of weapon
  8. 12. Triple _______ was made up of Germany, Italy and Austria-Hungary
Down
  1. 2. Soldiers wore these on their heads
  2. 3. This was a disease caused by water in the trenches
  3. 4. This can be used to see over the top of a trench
  4. 6. What nationality were the blackhand gang?
  5. 7. The triple _________ was made up of Britain France and Russia
  6. 8. Kaiser ______ was the leader of Germany in WWI