WWI Crossword Puzzle

8. A particular disease common amongst soldiers caused by damp conditions.
9. Techniques used to conceal soldiers and equipment.
11. The concept of depending on one's military to defend or promote national interests.
12. Payments demanded from one side to make amends and cover costs.
13. The nickname that was commonly used for US soldiers during the war.
16. Commonly thrown by soldiers to cause big explosions.
18. His assassination in Sarajevo sparked the war.
19. One-sided information used to manipulate public opinion during the war.
20. Weapon that fired ignited flammable liquid.

1. A type of warfare where soldiers dug for protection.
2. Vehicles that allowed for extensive flight and battles in the air.
3. The name of the British passenger ship that sank by a German U-boat.
4. The most dangerous zone between two opposing trenches.
5. Defensive, sharp obstacle used extensively during trench warfare.
6. Armored fighting vehicles that fired heavy rounds on the battlefield.
7. The telegram that tried to reach Mexico but was intercepted by the British.
10. A deadly, airborne mix of chemicals used against soldiers during the war.
14. A mechanical weapon that fired rounds at opposing sounds
15. The treaty that officially marked the end of World War I.
17. An agreement to stop fighting while negotiating peace.