Marine Corps · MOS history

1812 M1A1 Tank Crewman

Marine Corps MOS 1812 was renamed from M1A1 Tank Crewman to Armor Marine. This was a title change under the same MOS number, not a conversion to a different specialty code.

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1812 M1A1 Tank Crewman

Documented history

M1A1 Tank Crewman

The title change is recorded as effective 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: Armor 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:204; 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.