Marine Corps · MOS history

2641 Cryptologic Linguist Operator/Analyst (PMOS)

MOS 2641 changed from Cryptologic Linguist Operator/Analyst to Cryptologic Language Analyst, retaining the same code and primary specialty (PMOS) designation. The table also identifies a revised MOS description and a requirement change.

The directory also lists 2641 Cryptologic Language Analyst. Current service use is not established for this directory entry.

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

Cryptologic Linguist Operator/Analyst (PMOS)

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

  • Reserve retraining for PSMRP, Active Reserve and SMCR personnel was required as needed for conversion, subject to available funds.
  • Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists required appropriate service record book entries using the headquarters conversion action as authority.
  • Formal schools were to continue awarding current MOSs until a MARADMIN directed implementation.
  • The specific changes to the MOS description and requirements are not detailed here.
Source extraction notes

Source new title: Cryptologic Language Analyst (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.

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