WW1 Technology

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Across
  1. 5. Large Caliber gun classified as artillery
  2. 6. military airplane
  3. 7. Small explosive weapon thrown by hand
  4. 8. Created chemical burns on contact, blisters oozing yellow fluid, blindness
  5. 10. Sharp Spikes
Down
  1. 1. Lungs filled with fluid
  2. 2. Underwater ship
  3. 3. heavily armed and armored combat vehicle
  4. 4. Weapon used to shoot fire
  5. 9. fully automatic firearm designed for sustained rapid fire