| Down |
| 1. | threatening harm if actions are not made or met |
| 2. | Communist Army |
| 3. | U.S. representative in the Big 4 |
| 4. | Russian Radicals who won control of Russia |
| 5. | Brutal acts against defenseless civilians |
| 6. | air battle between airplanes |
| 7. | former colony, to be administered by the government of another nation |
| 9. | Austrian Archduke who was assassinated, led to the beginning of World War I |
| 14. | The day that Austria-Hungary declared war on Serbia |
| 15. | Pre-World War I group of Italy, Germany, and Austria-Hungary |
| 16. | Introduced by Britain that moved easily through enemy lines |
| 17. | systematic extermination of a ethnicity of people |
| 18. | Independent body, that is the Permanent court of International Justice |
| 20. | Weapon used mostly for observing enemy movement |
| 21. | World Organization to maintain peace |
| 23. | World War I country alliances of Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire |
| 26. | Serbian Nationalist who shot Archduke Franz Ferdinand |
| 27. | glorified of arms (Military) strength |
| 28. | the slow wearing down of each side trying to outlast each other |
| 29. | Leader of the Bolsheviks |
| 30. | ambition of a country to dominate another country or region |
| 31. | new name for the Bolshevik party |
| 32. | day the Bolsheviks took over control of Russia |
| 34. | British passenger liner that was sunk by a German U-Boat |
| 36. | love of one's country |
| 39. | Union of Soviet Socialist Republics |