World War 1 Review

4. The Canadian ace who shot down the Red Baron.
8. This was a trench problem that soldiers could not get rid of.
9. A group of ships travelling together for protection.
10. A truce; agreement to end war.
14. These were found scavenging food in the trenches.
16. Weapons that could go over all types of land.
17. A condition caused by perpetually wet feet; can lead to gangrene and amputation.
18. The battle that helped Canada forge a sense of national identity.
20. A ship sunk by German uboats; 128 American citizens drowned.

1. Canada's most prolific ace.
2. Battle where Germans used chlorine gas on Canadian troops for the first time.
3. Another word for submarines.
5. A battle in the air between airplanes.
6. A situation in which neither side can make substantial progress.
7. An excellent pilot who has shot down five enemy planes.
11. Compulsory military service.
12. A tool to help pay for the war; was supposed to be temporary.
13. Country that entered the war in 1917.
15. A type of warfare where enemies try to wear down each other's resources.
19. Canadian harbour town devastated by an explosion caused by colliding ships.