Fiscal Year 2026 Military Occupational Specialties Manual Changes Implementation

1.  Each year the Marine Corps Human Resource Development Process is
synchronized through publication of ref (A), the Military 
Occupational Specialties (MOS) Manual; Ref (B) governs the process.
Ref (A) defines occupational specialties found on tables of
organization, identifies skills of Marines to meet organizational
requirements, and otherwise provides information that enables the
Marine Corps to carry out its assigned mission to organize, train,
assign and manage the force.  The annual revision of the MOS Manual
was coordinated with the February authorized strength report.
2.  The fiscal year (FY) 2026 MOS Manual contains significant and
numerous changes.  A complete list of changes can be found in the
conversion tables (chapters 2 and 4) of ref (A), which can be viewed
on the website identified in paragraph (par) 5 below.
2.a.  New officer MOSs were created in occupational fields (OccFld)
72, 80, and 88; enlisted MOSs were created in OccFlds 03, 21,
35, 59, 72, 80, and 82.
2.b.  Officer MOSs 2125 (Electro Optics Instrument Repair Officer),
8246 (Foreign Area Officer (FAO)-South Asia), 8247 (FAO-Europe), and
8248 (FAO-Southeast Asia) have been deleted; enlisted MOS 8624
(Small Unmanned Logistics System-Air Specialist) has been deleted.
2.c.  There are no officer grade structure changes; there are
grade structure changes in enlisted OccFld 02.
2.d.  There are many changes to the summary, requirements, and
prerequisites fields within the MOS Manual in officer and enlisted
OccFlds 01, 02, 03, 04, 05, 06, 08, 09, 11, 13, 17, 18, 21, 23, 26,
28, 30, 34, 35, 44, 45, 48, 55, 57, 58, 59, 60, 61, 63, 65, 66, 68,
70, 72, 73, 80, 81, 82, 84, 86, 87, and 88.
2.e.  There are MOS title changes in officer OccFlds 02, 03, 21, 72,
80, 82, and 86; MOS titles are changed in enlisted OccFlds 02,
03, 04, 26, 70, 73, and 86.
2.f.  There are no officer or enlisted category status changes.
3.  To ensure content accuracy and completeness of the MOS Manual,
significant changes to the MOS Manual were reviewed in accordance
with ref (B) by the personnel, organization and training working
groups, featuring representatives of Total Force Structure Division,
Training and Education Command (TECOM), and Manpower and Reserve
Affairs (M&RA), as well as occupational field mangers and MOS
specialists.
4.  Execution
4.a.  As of 1 October 2025, the Total Force Structure Management
Systems and Marine Corps Total Force Systems (MCTFS) will be updated
to reflect the revisions set forth in ref (A).
4.b.  Commanding officers and all personnel associated with the
systems that rely on MOSs shall familiarize themselves with the
revisions and take actions as directed in the manual.
4.c.  Commanding officers of reporting units must make any MOS
conversions, deletions, or report any new MOSs for Marines based on
the revised manual as of 1 October 2025.
4.d.  School directors began awarding updated MOSs on 1 October 2025
at which time obsolete MOSs are no longer awarded.
4.e.  DC M&RA
4.e.1.  Convert MOSs in all systems including MCTFS as summarized in
chapters 2 and 4 of ref (A).
4.e.2.  Ensure appropriate action is completed for Marines affected
by deletion of their Primary MOS.
5.  The MOS Manual was approved on 7 March 2025 and will be posted on
the Marine Corps Publications Electronic Library.  The new MOS chart
and ref (A) can be viewed at
https://usmc.sharepoint-mil.us/sites/TECOM_PSD_MOSMan.
6.  The MOS Manual is approved for implementation as of 1 October
2025 (FY 2026).  
7.  This Manual is applicable to the Marine Corps Total Force.
8.  Release authorized by LtGen Benjamin T. Watson, Commanding
General, TECOM.