WWI Technology

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Across
  1. 5. Gun. Rapid-firing automatic firearm capable of sustained fire.
  2. 8. Armored military vehicle designed for front-line combat.
  3. 9. Powered aircraft with fixed wings and a weight greater than that of the air it displaces.
  4. 10. Device that projects flamable liquid to cause ignition.
Down
  1. 1. A fortified defensive position often dug into the ground.
  2. 2. A type of airship used for spying during WWI.
  3. 3. Watercraft capable of submerging and operating underwater.
  4. 4. Large-caliber guns used for long-range bombardment.
  5. 6. Mans Land The barren and dangerous area between opposing trenches.
  6. 7. Chemical weapon used during WWI, causing respiratory problems.