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Marine Corps · MOS history

0659 Cyber Network Systems Chief (PMOS)

The FY19 Marine Corps MOS Manual deleted MOS 0659, Cyber Network Systems Chief (PMOS), as indicated by remark 3. The entry names no successor specialty.

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Documented history

Cyber Network Systems Chief (PMOS)

1 October 2018 was the scheduled active-duty-component batch date for the Marine Corps Total Force System (MCTFS). It was not a universal individual qualification or retraining date.

  • Reserve retraining for PSMRP, Active Reserve and Selected Marine Corps Reserve personnel was required as applicable for conversion, subject to available funds.
  • Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists required appropriate service record entries using the headquarters conversion action as authority.
  • Formal schools were to continue awarding current MOSs until a MARADMIN directed implementation.
Source extraction notes

Figure 4-1 remarks: 3. Paragraph 4001.1b schedules the active duty component MCTFS batch for 1 October 2018. Paragraph 4001.6 separately covers Reserve retraining, subject to available funds for the specified retraining groups, and record updates for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists. Under paragraph 4002.3, formal schools keep awarding current MOSs until a MARADMIN directs implementation. The batch date is not a documented universal individual qualification or retraining date.

Source documents (1)

Reviewed September 24, 2026 against references 1, 3 and 4.

Cyber Network Systems Chief (PMOS)

MOS 0659, Cyber Network Systems Chief, was split into conditional successor specialties 0631, 0671, 0639, and 0679, rather than one replacement for everyone. The listed grade range was private through gunnery sergeant.

1 October 2017 is listed as the end date for the old classification. The MARADMIN's publication date was 31 August 2017.

  • The available information does not explain which conditions determined each successor MOS or identify the components covered.
Source extraction notes

The cited source prints the MOS code but not its occupational title; no title was inferred. Raw table row; grade Pvt-GySgt. Destination set is conditional where multiple codes are listed.

Source documents (2)

Reviewed September 24, 2026 against references 1, 2 and 3.

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