Marine Corps · MOS history

0513 Title not stated in source

Additional MOS 0513 converted to MOS 0531 for Marines in the grades of corporal through gunnery sergeant. This changed an additional designation, not the primary specialty.

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Codes named in this history

Codes without a directory match

0531 stated by the source. No directory or archive record matches.

Documented history

Title not stated in source

The conversion took effect October 1, 2003; September 24, 2003 was the message's publication date.

The notice does not state an occupational title or describe duties for MOS 0513.

Source extraction notes

The cited source prints the MOS code but not its occupational title; no title was inferred. Additional MOS conversion, Cpl-GySgt.

Source documents (1)

Reviewed September 23, 2026 against references 1 and 2.

MARADMIN 446/03, FY04 Military Occupational Specialty Conversions
1. MARADMIN 446/03, para 2 table · source dated September 24, 2003 · cited by the explanation
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2.MARADMIN 446/03, FY04 Military Occupational Specialty Conversions · event transcription · docs/legacy-data/usmc-mos-conversions.jsonl:183; MARADMIN 446/03, para 2 table · 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.