| Term | Definition |
| poison gas | a gas that is poisonous to breath or contact |
| doughboys | a nickname for the inexperienced but fresh American soldiers |
| U-boats | German Submarine |
| Lenin | Russian founder of the Bolsheviks and leader of the Russian Revolution and first head of the USSR (1870-1924) |
| Armistice | a state of peace agreed to between opponents so they can discuss peace terms |
| conscription | compulsory military service |
| selective service | compulsory military service |
| army nursing corps | the only group of women to actually serve in the army, A corps consisting of the only women to 'serve' in the war and the only women sent overseas in the war |
| victory gardens | gardens planted by americans citezens during war to raise vegetables for home use leaving more for the troops |
| propaganda | information that is spread for the purpose of promoting some cause |
| neutral | one who does not side with any party in a war or dispute |