Marine Corps · MOS history

6056 Title not stated in source

MARADMIN 474/00 directed that Marines in grades private through gunnery sergeant with primary MOS 6056 have it replaced by primary MOS 6256. This applied to active-duty, Reserve (SMCR, IRR, IMA and Standby Reserve), and retired Marines.

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.

Documented history

Title not stated in source

September 30, 2000 was the deadline for completing the conversions, not an exact conversion date. The order does not state the day an individual Marine's conversion occurred.

  • The order identifies the codes but does not give their occupational titles or describe their duties.
Source extraction notes

The cited source prints the MOS code but not its occupational title; no title was inferred. PMOS conversion for grades PVT-GYSGT; 2000-09-30 is the stated no-later-than conversion deadline, not an exact event date. Paragraph 1 covers active, Reserve (SMCR, IRR, IMA and Standby Reserve) and retired Marines, using separate headquarters unit-diary entries under the same no-later-than deadline.

Source documents (1)

Reviewed September 24, 2026 against references 1 and 3.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.