Personnel Clerk

0121 — Personnel Clerk is a U.S. Marine Corps personnel role in the administration career field.

U.S. Marine Corps Personnel Clerk (0121) serve within the Personnel community, performing missions critical to USMC readiness. This role blends technical proficiency, teamwork, and disciplined execution across garrison, deployed, and expeditionary environments. Members receive formal schoolhouse training followed by hands-on qualification at operational units, progressing from apprentice through journeyman and master skill levels.

• Execute personnel clerk duties in support of unit missions
• Maintain proficiency through recurring training and qualifications
• Inspect, operate, and maintain assigned equipment and systems
• Coordinate with team leaders and adjacent specialties
• Document operations, maintain records, and brief leadership

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