Across
- 4. A way of fighting where small groups surprise the enemy with quick attacks, then hide or run away.
- 6. Heavy armored vehicles first used in WWI.
- 9. WWI saw rapid advances in this field. Makes daily life easier.
- 11. Polish-French scientist; Invented mobile X-ray units during WWI.
- 12. A system, like wires or radios, used to send messages between soldiers, officers, and bases during war.
- 17. Using chemicals or poisonous gases as weapons to hurt or kill people in war.
- 18. Nickname for German stick grenade.
- 19. Invented early gas mask; African-American innovator.
Down
- 1. A machine that uses special rays to look inside the human body, especially to see broken bones.
- 2. Used to carry and pull equipment
- 3. A type of wire with sharp points on it, used to keep people or animals from passing through an area.
- 5. The first version of something new, like a machine or weapon, used to test how it works before making more.
- 7. Sabotaged Ottoman Empire communication lines and railways
- 8. Nickname for the massive German artillery gun.
- 10. An early version of a tank built by Germany during WWI; it was a heavy, armored vehicle designed for battle.
- 13. Russian born; Invented acetone production.
- 14. A dangerous gas used during WWI that could hurt or kill people when they breathed it in.
- 15. Secretly damaging or destroying something to hurt the enemy’s plans or supplies during war.
- 16. A special mask that covers the face and helps protect people from breathing in harmful gases.
