The Second Battle of Ypres

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Across
  1. 3. element that is poisonous
  2. 5. the chlorine gas destroyed this in the body
  3. 6. state of the chlorine attack
  4. 7. the country who launched the first gas attack
  5. 8. largest howitzer
  6. 9. the month the battle took place during
  7. 10. where the battle took place
Down
  1. 1. the side the Canadians were fighting for
  2. 2. weapon used for long range attacks
  3. 3. only ones who held the 3.5 km front line
  4. 4. cloth soaked in this acted as a gas mask
  5. 7. later developed due to gas attacks