Subject
- Recruiting, enlistment, etc64
- Training of62
- Legal status, laws, etc59
- Operational readiness57
- Services for57
- Political activity56
- World War, 1914-191853
- African American troops52
- Reserves50
- United States. Department of Defense49
- Health and hygiene47
- Education, Non-military46
- Government policy46
- Evaluation45
- Social conditions43
- Social aspects42
- Mental health services39
- Iraq War, 2003-201138
- Prevention35
- Psychological aspects35