World War I Crossword

2. A group of countries who agree to work together for shared interests
4. Large aircraft without wings, with a bag filled with gas
6. A deep hole dug by soldiers and used to attack the enemy while remaining hidden
7. Building up strong armed forces in order to gain advantages
10. To stop fighting and admit defeat
12. A formal declaration that a ruler no longer want to be in power
14. A group of countries ruled by a single person or country
15. The position of not saying or doing anything that helps any of the groups involved in an argument or war

1. Containers with a pointed end, filled with explosives, and shot from a large gun
2. A formal agreement between two or more countries at war to stop fighting and talk about terms of peace
3. Large military vehicles, driven by wheels turning inside moving metal belts
5. The murder of someone famous or important
6. Long bombs which travel under water to destroy ships
8. The place where soldiers are actively fighting during a war
9. When people compete with each other for the same thing
11. Guns with a long barrel, fired from the shoulder, accurate at long distances
13. The part of an army that fights (and moves) on foot