| A | B |
|---|
| alliance | an agreement among competing nations to help each other if war broke out |
| mobilization | the assembly and movement of troops |
| entente | an understanding between nations |
| balance of power | a situation in which each side has equal strength |
| Central Powers | Included Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire during WWI |
| Allied Powers | Included England, France, Italy and Russia during WWI |
| neutrality | a policy of not taking sides |
| front | a line along which opposing armies face each other |
| trench warfare | style of fighting from ditches used in WWI |
| civilian | a citizen not in the military |
