World War 1

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Across
  1. 1. Gas that causes blisters on the skin.
  2. 4. A document that makes a deal with different forces.
  3. 7. A hard, protective head covering.
  4. 9. A ship that sank during the war.
  5. 11. A long narrow ditch.
  6. 12. A sharp blade on the end of a rifle.
  7. 13. Women who worked with TNT.
Down
  1. 2. An outfit that everyone in the army has to wear.
  2. 3. A small handheld bomb.
  3. 5. Someone who fights for the army.
  4. 6. Advertising to convince people to join the war.
  5. 8. A big metal vehicle that moves on tracks.
  6. 9. Tiny critters that cling on to hair.
  7. 10. A red flower associated with war.