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Subject
- Artillery drill and tactics.[remove]5
- Soldiers--United States.[remove]5
- Machine guns.2
- Cavalry--United States.1
- Deserts.1
- Drill and minor tactics.1
- Edgewood Arsenal (Md.)1
- Explosions.1
- Firearms.1
- Gas masks.1
- Military art and science.1
- Military education.1
- Military training--United States.1
- Smoke screens.1
- Tanks.1