- Age and legal status
- Age limits and citizenship or residency rules vary by service, component, and entry route.
- Education and testing
- Education credentials, aptitude testing, and any required scores depend on the path and career field.
- Medical and physical standards
- Each service reviews medical history, fitness, and role-specific standards; some situations may have a formal review or waiver process.
- Background and role requirements
- Conduct history, security requirements, licenses, and other qualifications can affect some roles or programs.
- Officer and specialized routes
- Commissioning programs and specialized careers may have degree, experience, testing, or selection requirements beyond general enlistment.