mos.directory

Marine Corps · MOS history

2621 Signals Intelligence and Electronic Warfare Operator/Analyst (PMOS)

MOS 2621 changed from Signals Intelligence and Electronic Warfare Operator/Analyst to Communications Intelligence/Electronic Warfare Operator, retaining the same code and primary MOS (PMOS) status. Remarks 2 and 7 identify a revised MOS description and a requirement change.

The directory also lists 2621 Communications Intelligence/Electromagnetic Warfare Operator. Current service use is not established for this directory entry.

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Listed in today's directory

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Documented history

Signals Intelligence and Electronic Warfare Operator/Analyst (PMOS)

1 October 2018 was the scheduled active-duty-component batch date in the Marine Corps Total Force System (MCTFS).

  • The record does not specify the details of the revised requirements.
  • Reserve retraining for PSMRP, Active Reserve and SMCR personnel was required as needed for conversion, subject to available funds; service-record updates for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists used the Headquarters conversion action as authority.
  • Formal schools were to continue awarding current MOSs until a MARADMIN directed implementation.
Source extraction notes

Source new title: Communications Intelligence/Electronic Warfare Operator (PMOS). Figure 4-1 remarks: 2, 7. 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.

Communications Signals Collection Operator/Analyst (PMOS)

MOS 2621 was renamed from Communications Signals Collection Operator/Analyst to Signals Intelligence and Electronic Warfare Operator/Analyst, retaining code 2621 and its primary MOS (PMOS) status. The classification's grade range narrowed from Private through Gunnery Sergeant to Private through Sergeant, with revised description and requirements.

Paragraph 4001.1b schedules the active-duty-component Marine Corps Total Force System (MCTFS) batch change for 1 October 2017. Paragraph 4002.2 instead prints 1 October 2008, a conflicting date; the 2017 date follows the FY18 manual's explicit implementation schedule.

  • The table flags a requirement change but does not explain the revised requirements.
  • Reserve retraining for Prior Service MOS Retraining Program, Active Reserve and SMCR Marines was required as applicable and subject to available funds. For Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists, service-record entries were authorized by the headquarters conversion action appearing on the unit's Diary Feedback Report.
  • Formal schools were to continue awarding current MOSs until MARADMIN direction implemented the conversions.
Source extraction notes

Source new title: Signals Intelligence and Electronic Warfare Operator/Analyst (PMOS). Figure 4-1 remarks: 2, 4, 7. NAVMC 1200.1C (FY18) paragraph 4001.1b schedules the active-duty-component MCTFS batch for 2017-10-01. Paragraph 4001.6 separately addresses Reserve retraining, subject to available funds for the specified groups, and records for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists. Paragraph 4002.3 keeps formal-school MOS awards unchanged until MARADMIN implementation direction. The scheduled batch date is not proof of an individual's qualification, retraining or record-update completion. Paragraph 4002.2 prints 1 October 2008, in conflict with the 1 October 2017 schedule in paragraph 4001.1b. The recorded date follows the edition-specific schedule in paragraph 4001.1b; the conflicting printed instruction is not silently corrected. The conversion table changes the classification's grade range from Pvt-GySgt to Pvt-Sgt. These ranges are not a direction to promote or demote individual Marines.

Source documents (1)

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

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