Across
- 2. used by all soldiers in WW1 (5)
- 3. area between opposing front lines
- 6. need cutters to get through this (6,4)
- 8. tanks were first used at this battle (5)
- 12. the back wall of a trench (7)
- 14. this gas was used at Ypres in 1915 (8)
- 18. this colorless gas is deadly (7)
- 20. trench between front & support trench (13)
- 21. get on this to shoot (Two words 4,4)
Down
- 1. wood at the bottom of a trench (4,6)
- 4. this gun needed 4-6 men to work it (7)
- 5. this american liner was blown up (9)
- 6. trench hiding place (4,4)
- 7. caused by standing in water (6,4)
- 9. used for protection (4,3)
- 10. these weapons were used by submarines (9)
- 11. the front wall of a trench (7)
- 13. also known as Blimp (8)
- 15. name of the first tank little (6)
- 16. a fight between 2 planes (8)
- 17. underground storage area(6)
- 19. drainage channel (4)