Marine Corps · MOS history

0321 Reconnaissance Man (PMOS)

MOS 0321, Reconnaissance Man (PMOS), was renamed Reconnaissance Marine. This was a title change within the same primary specialty, with the code remaining 0321.

The directory also lists 0321 Reconnaissance Marine. Current service use is not established for this directory entry.

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Codes named in this history

Listed in today's directory

These codes have directory pages; their current use has not been reviewed, so no current claim is made here.

0321Reconnaissance Marine

Documented history

Reconnaissance Man (PMOS)

The recorded effective date for the title change is June 24, 2016. June 30, 2016 is the publication date of MARADMIN 342/16, not the effective date.

Source extraction notes

Same-code title change to: Reconnaissance Marine.

Source documents (1)

Reviewed September 24, 2026 against references 1 and 2.

MARADMIN 342/16, Military Occupational Specialty Renaming
1. MARADMIN 342/16, para 4 old/new description tables · source dated June 30, 2016 · cited by the explanation
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2.MARADMIN 342/16, Military Occupational Specialty Renaming · event transcription · docs/legacy-data/usmc-mos-conversions.jsonl:191; MARADMIN 342/16, para 4 old/new description tables · cited by the explanation
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Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.