Across
- 3. German submarine used to attack Allied shipping
- 4. U.S president during WW1
- 7. Nickname for American infantrymen in WW1
- 8. Airship used by Germany for bombing raids
- 10. Agreement that ended WW1 fighting
- 12. Powers, including Germany, Austria-Hungary
- 14. A deadly gas used in chemical warfare
- 15. The coalition including Britain, France, and Russia
Down
- 1. Land between trenches
- 2. First name of Princip, the assassin of Archduke Franz Zeppelind
- 5. A major and deadly battle in 1916
- 6. British ship sunk by German U-boat
- 9. Site of one of the lonMustardttles in WW1
- 11. First name of the archduke whose assassination sparked the war
- 13. Deep ditches used in WW1 warfare
