Across
- 3. — Mandatory military service
- 4. — British wartime prime minister (two names combined)
- 8. — Type of ammunition (compound as one entry)
- 9. — Area of active combat
- 12. — Aerial combat between fighter planes
- 13. — Heavy guns used for bombardment
- 15. — Major 1916 British offensive in France
- 16. — Dead zone between opposing trenches
- 17. — Mutual defense agreement of nations
- 18. — Agreement that ended fighting in 1918
- 20. — Long 1916 battle between France and Germany
- 21. — U.S. president who proposed Fourteen Points
- 22. — Armored vehicle introduced in WWI
- 23. — German submarine
Down
- 1. — Information used to influence public opinion
- 2. — Woodrow Wilson’s postwar principles (no spaces)
- 5. — Foot soldiers
- 6. — Payments demanded from defeated nations
- 7. — 1915-16 Allied campaign in Ottoman territory
- 10. — Chemical weapon causing severe blisters
- 11. — Rigid airship used for bombing and reconnaissance
- 14. — Powerful early-20th-century battleship
- 19. — Grouped merchant ships protected from submarines