| A | B |
|---|
| Eddie Rickenbacker | American fighter pilot who became Ace of Aces. |
| Selective Service Act | Men were required to register with the government in order to randomly be selected for service. |
| convoy system | A heavy guard of destroyers escorted merchant ships back and forth across the Atlantic. |
| American Expeditionary Force | (AEF)US forces consisting of men from across the country. |
| General John J. Pershing | Leader of the AEF. |
| Alvin York | A US soldier who killed 25 Germans and captured 132 others. |
| conscientious objector | A person who opposed warfare on moral grounds. |
| armistace | A truce that causes a cease-fire. |
