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- Defenses✖[remove]48
- History48
- Fortification11
- Military policy11
- Economic aspects10
- Fortification, Field10
- War9
- National security8
- Trench warfare7
- Ballistic missile defenses6
- History, Military6
- Industrial mobilization6
- Politics and government6
- Military art and science5
- Cabinet officers4
- Grant, Ulysses S. (Ulysses Simpson), 1822-18854
- Johnson, Louis Arthur, 1891-19664
- Lee, Robert E. (Robert Edward), 1807-18704
- Military leadership4
- Overland Campaign, Va., 18644