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Subject
- Smoke screens.[remove]11
- Aeronautics, Military.6
- Biplanes.6
- Bombers.5
- United States. Army. Air Corps.5
- Military art and science.2
- Airships.1
- Artillery drill and tactics.1
- Cavalry.1
- Chemical warfare.1
- Demonstrations.1
- Edgewood Arsenal (Md.)1
- Formation flying.1
- Great Britain. Royal Navy.1
- Lexington (Aircraft carrier : 1943-1991)1
- Los Angeles (Airship)1
- Military training--United States.1
- Motion picture journalism--United States--History.1
- Movietonews (Firm)1
- Naval art and science.1