Military police advance to higher ranks and more authority with years of experience and additional training. All of the military branches have nine enlisted grades (E-1 through E-9) and 10 officers' grades (O-1 through O-10). The higher the number is, the more advanced a person's rank. The criteria for promoting individuals varies depending on the military branch, but in general, promotions depend on factors such as time served, demonstrated abilities, recommendations, and scores on written exams. Promotions become increasingly competitive as people advance in rank. On average, a diligent enlisted person can expect to earn one of the middle non-commissioned or petty officer rankings (E-4 through E-6); some officers can expect to reach lieutenant colonel or commander (O-5). Outstanding individuals may be able to advance beyond these levels.
- Aeronautical and Aerospace Technicians
- Aerospace Engineers
- Architects
- Avionics Engineers
- Avionics Technicians
- Biosecurity Monitors
- Bodyguards
- Chemical Technicians
- Chemists
- Computer Network Administrators
- Computer Programmers
- Computer Systems Programmer/Analysts
- Cryptographic Technicians
- Drone Pilots
- Electronics Engineering Technicians
- Engineering Technicians
- Engineers
- Environmental Engineers
- Flight Instructors
- Fluid Power Technicians
- Futurists
- Gunsmiths
- Hypersonics Engineers
- Hypersonics Technicians
- Intelligence Officers
- Internet Security Specialists
- Interpreters
- Laboratory Testing Technicians
- Laser Technicians
- Manufacturing Supervisors
- Materials Engineers
- Mechanical Engineers
- Meteorologists
- Military Pilots
- Military Recruiters
- Military Workers, Enlisted
- Military Workers, Officers
- Non-Destructive Testing Specialists
- Optical Engineers
- Physicists
- Pilots
- Quality Control Engineers
- Quality Control Technicians
- Radiation Protection Technicians
- Robotics Engineers
- Robotics Technicians
- Security Consultants
- Security Guards
- Space Pilots
- Translators