Across
- 6. His assassination sparked the war in 1914
- 8. Peace treaty that officially ended WWI in 1919
- 12. Armoured vehicles first introduced in WWI
- 15. The German emperor during World War I
- 19. When entire societies mobilise all resources for war
- 22. Alliance of Britain, France, and Russia
- 23. The deadly area between opposing trench lines
- 26. A chemical weapon that caused blisters and blindness
- 28. British passenger ship sunk by a German U-boat in 1915
- 29. Region of conflict between Germany/Austria and Russia
- 30. U.S. plan for peace proposed at the end of the war
Down
- 1. International organisation formed after WWI to promote peace
- 2. Main theatre of war in Belgium and northern France
- 3. Nickname for American soldiers in WWI
- 4. U.S. president who led America into the war in 1917
- 5. Defensive wire used to protect trenches
- 7. Forcing citizens to serve in the military
- 9. Site of a major Allied offensive with huge casualties in 1916
- 10. Aerial battle between fighter planes
- 11. German submarine used to disrupt Allied shipping
- 13. Secret German proposal to Mexico intercepted by the Allies
- 14. Used by governments to shape public opinion and boost morale
- 16. Alliance of Germany, Austria-Hungary, and the Ottoman Empire
- 17. Agreement that ended the fighting on 11 November 1918
- 18. Psychological trauma experienced by soldiers
- 20. Famous German flying ace Manfred von Richthofen
- 21. One of the longest and bloodiest battles of the war, fought in 1916
- 24. Weapon that changed battlefield tactics with rapid fire
- 25. Deep ditches used for protection and combat on the front lines
- 27. Limiting food and supplies to support the war effort