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Subject
- Military art and science.[remove]51
- United States. Army.13
- Aeronautics, Military.9
- Naval art and science.6
- World War, 1939-1945.6
- Antiaircraft artillery.5
- Cavalry drill and tactics.5
- Drill and minor tactics.5
- Horsemanship.5
- Soldiers.5
- Airplanes.4
- Biplanes.4
- Bombers.4
- Soldiers--United States.4
- Tanks (Military science)4
- United States. Marine Corps.4
- United States. Navy.4
- Aeronautics--Study and teaching.3
- Aeronautics.3
- Marching drills.3