Across
- 4. a place between trenches
- 6. something that flies
- 8. a metal mechanised machine
- 11. a wire with metal spikes on it
Down
- 1. a weapon that was automatic
- 2. a boat that was hit by a German torpedo
- 3. a weapon that dispenses fire
- 5. a rodent
- 7. is a hero that protected the soldiers from gas
- 9. a protected position
- 10. a chemical weapon