Piper and Shyann

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Across
  1. 1. destroyed 10 million tons of supplies
  2. 4. were also introduced by the british
  3. 5. was a hero alerting soldiers
  4. 7. mines filled no man’s land
  5. 8. were changing the way war was fought at sea
  6. 9. were changed while fighting
  7. 10. foot was the result of feet being exposed to wet conditions
  8. 11. were the way they protected themselves
Down
  1. 2. Franz Ferdinand assassination started WWI
  2. 3. in an alliance were called allies
  3. 5. were changing the way war was fought
  4. 6. wire `was filled in no man's land
  5. 10. were caused by lice
  6. 12. man’s land was crossed on christmas day