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0369E5

Infantry Unit Leader

E-5 (Sergeant) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

The Sgt who carries 0369 as a primary MOS is in one of two situations: an administrative edge case in the Marine Corps personnel system, or — more likely — a Marine who recently completed a lateral move from a source 03xx MOS and is navigating what the designation change means for their career. If you are a Sgt 0369, this entry is for you. If you are a Sgt 0311/0331/0341 wondering whether 0369 is in your future, this entry is also for you — it describes what the transition means and how to build toward it. The real 0369 story starts at SSgt; this tier is the last chapter before the designation takes full operational effect.

The Honest MOS Read
The Sgt 0369 sits at an unusual position in the Marine Corps enlisted structure: they are in the infantry NCO career tier where the squad leader billet is the standard expectation, but they carry a MOS designator that is designed for senior infantry leadership roles that do not formally open until SSgt. This is not a contradiction — it is a transitional state, and understanding it clearly is the first leadership task at this tier. The 0369 designation at Sgt either reflects a lateral move from a source 03xx MOS (0311, 0331, 0341, 0351, 0352) that was processed at the Sgt level through MCO 1300.8 channels — which is earlier than the standard SSgt entry point and indicates a Marine with exceptional performance recognition — or it is an administrative or system artifact that should be clarified through the career planner. In either case, the Sgt's day-to-day job is the same as any infantry Sgt: squad leader in a rifle or weapons company, running twelve to thirteen Marines, writing FitReps on Cpls, briefing the squad scheme in the platoon back-brief, and building the professional record that makes a senior infantry leadership career possible. What changes with the 0369 designator is context and trajectory. The Sgt who carries 0369 and understands what the MOS represents — senior infantry NCO advisory and operational leadership at battalion and regimental level — should be spending their Sgt tour with a different orientation than the Sgt who is simply building toward SSgt in the source MOS. The 0369 Sgt is already on a track where the SSgt billet may involve advising the S-3 rather than being assigned to a rifle platoon's squad leader slot. That changes how they build their skill base, how they approach the FitRep writing cycle, and how they think about the Career Course timeline and the SSgt board profile. The practical reality: a Sgt 0369 should still function as a squad leader if assigned to a line company. The 0369 designation does not exempt the Sgt from the infantry tactical execution that the platoon sergeant expects from every squad leader. If anything, the designation implies a higher baseline expectation — the SNCO-track Marine who cannot run a clean squad leader billet in a rifle company is not a credible senior infantry advisor later. The execution skills matter. The squad runs on the Sgt's back. The SSgt board is the next visible gate. The 0369 Sgt is competing for SSgt selection through the Marine Corps's centralized SNCO selection board under MCO 1400.32, not through the cutting score system that governed Cpl and Sgt promotions. The board reads the full FitRep record — relative value placement, reporting senior quality, reviewing officer narrative, awards, PME completion, and the overall competitive package quality across the Sgt's record. The Career Course PME completion, the FitRep relative-value placement during the squad leader tour, and the physical standards (1st-Class PFT and CFT) are the three variables the board reads most clearly. All three should be priority one through three. The transition from source 03xx MOS to 0369 is not a promotion — it is a designation change that announces a career direction. The Sgt who treats it as a title rather than a commitment to the senior leadership standard the MOS requires will arrive at SSgt with a designation that does not match their record. The Sgt who treats it as the beginning of the senior infantry NCO track and invests accordingly will arrive at the SSgt board with a record that makes the designation credible. The MEU deployment cycle, the ITX rotation at Twentynine Palms, the Career Course PME, the FitRep writing on three Cpls per cycle — this is the daily content of the Sgt 0369 tour. Own it.
Career Arc
  • 01Lateral move from source 03xx MOS (0311/0331/0341/0351/0352) to 0369 designator, processed through MCO 1300.8 channels — or administrative clarification with career planner if the designator change was unexpected.
  • 02Squad leader assignment in rifle company or weapons company — the standard Sgt billet regardless of the 0369 designator.
  • 03Sergeants Course completion (if not already complete) — required for SSgt board eligibility; verify current MCO/MARADMIN requirement.
  • 04Three Cpl FitRep cycles as squad leader — the FitRep writing quality and relative-value placement during this tour is the primary input to the SSgt centralized selection board.
  • 05MEU PTP workup and MEU deployment as squad leader — the operational rep that the SSgt board reading the FitRep record traces back to.
  • 06Career Course PME enrollment or completion — in-residence at regional NCO academy preferred; the SSgt board reads PME completion and the board cycle is narrowing.
  • 07SSgt centralized selection board under MCO 1400.32 — the full FitRep record, awards, PME, physical scores, and the comparative quality of the package against every other Sgt in the pool.
Common Screwups
  • ×Treating the 0369 designator as a title or seniority signal at the Sgt level rather than a designation that requires consistent performance to validate. The SgtMaj who reads the Sgt's record and finds a weak squad leader tour behind the 0369 designation is not impressed by the designation.
  • ×Missing or deferring the Sergeants Course and Career Course PME windows because the operational tempo is high. The SSgt board reads PME completion; the Sgt 0369 who arrives at the board without Career Course in progress is the Sgt who is not competitive in a small MOS pool.
  • ×NJP, Article 92 violation, or DUI at the Sgt level. The 0369 designator marks a Marine as a senior-infantry-leadership track candidate; conduct that terminates that track at Sgt forecloses the senior advisory billets the designation was pointing toward.
  • ×Weak FitRep relative-value placement during the squad leader tour. The SSgt centralized selection board reads the comparative record — a Sgt 0369 who is not in the top third of relative-value rankings in the company's Sgt FitRep pool is not competitive for the SSgt board in a small MOS. Know where your relative-value placement stands.
  • ×Underestimating the SSgt board's read on source-MOS execution. A Sgt who carries 0369 but has not run a clean squad leader tour in the source 03xx MOS lacks the operational credibility the senior infantry advisory role requires. The designation means nothing without the execution record behind it.

A Day in the Life

  • 0500Wake. Check the platoon group chat for overnight incidents. As a squad leader, any liberty issue in your squad is your notification first — before the platoon sergeant finds out another way.
  • 0530PT formation. You take accountability for the squad (you + three Cpls + 9-10 LCpls/PFCs depending on current TO&E), report to the platoon sergeant (SSgt). Missing Marine is your problem before the platoon sergeant asks.
  • 0545-0700Unit PT. You set the squad's pace. Ruck days, run days, strength days, MCMAP mat days rotate through the platoon's weekly plan. Wednesdays often run as a full platoon formation run; Thursdays may be the squad-led PT block where you build the plan yourself. The platoon sergeant watches whether your squad holds pace and effort.
  • 0700-0830Hygiene, chow, utilities. Pre-walk the squad area and each fire team's gear before morning formation. Your Cpls should not be finding what you should have caught during your walk.
  • 0830Morning formation. Platoon sergeant gives the day's tasking. You confirm squad accountability, brief your Cpls on the day's priorities, and your Cpls brief their fire teams.
  • 0900-1130Work day — squad collective task rehearsal (squad attack, squad defense, urban operations, patrol base operations), range work as the squad leader on the firing line, working party as the senior NCO on the manifest, or company-level collective training event. You run the squad's piece of the lane, not just observe it.
  • 1130-1300Chow. As a Sgt you sit with the Sgts and SSgts. Your Cpls sit with the Cpls. Your LCpls sit with the LCpls. The chow hall seating is the visible chain of command.
  • 1300-1500Afternoon work. FitRep input cycle for Cpls if the rating period is open — Section A input drafts due to the platoon commander's schedule. Monthly Pro/Con sit-down counseling for each Marine in the squad. Career Course coursework through CDET or in-residence assignment prep. As a Sgt 0369, one afternoon per week should include reading a chapter of MCRP 3-10A.4 or MCWP 3-10 to build the battalion-level doctrinal familiarity the SSgt billet will require.
  • 1500-1630Final formation. Platoon sergeant gives the next day's plan. Sensitive items (NVGs, optics, comm gear, crypto) back into the armory. Your Cpls run the fire team counts; you sign the squad-level count. Hand each Cpl a 3x5 card with tomorrow's priorities.
  • 1630Liberty call on a normal garrison schedule. Field problems, ranges, range coverage, guard duty, and MEU PTP events break this.
  • 1700-2000Personal time. If married and off-base, family time. If in the barracks or single, second PT session, Career Course coursework, Tuition Assistance college class, financial admin. The good Sgt protects home time and uses personal time deliberately.
  • 2000-2200Available. If a Marine in your squad calls about a financial problem, marital issue, legal matter, or a 2200 crisis, you answer and you route — Command Financial Specialist, base legal, chaplain, SARC, Behavioral Health at Branch Medical. The squad leader who answers the phone and shows up is the squad leader the squad trusts with anything.
  • 2200Lights out. Tomorrow starts at 0500.
  • ITX rotation at MCAGCC Twentynine PalmsThe clock breaks. Squad-led drills during the day, platoon-level lanes when the platoon sergeant runs them, sleep in shifts in the patrol base. You are up before stand-to at 0500, your squad's sector is your responsibility through evening stand-to, and you sleep when the platoon sergeant rotates you. A 21-day ITX feels like 45. The OC/T from MAGTFTC at Twentynine Palms is reading every squad leader in the company — and the Sgt 0369 who runs a clean lane and an honest AAR is the one who gets cited in the evaluation summary the battalion CO reads.
  • MEU deployment afloat (BLT embarked)Squad leader on the Battalion Landing Team aboard amphibious shipping (LHD/LPD/LSD). MEU-SOC training days, shipboard training on limited space, port visits when granted, contingency response posture days. Daily brief to the platoon commander on squad readiness during contingency windows. The SgtMaj of the MEU is watching the squad leaders. The Sgt 0369 on a MEU deployment is building the operational rep the SSgt board reads in the FitRep narrative — run the squad well, and the platoon commander's FitRep input reflects it.

Weekly Cadence

The Mon-Fri rhythm at Sgt 0369 runs on the platoon training schedule and the squad's honest self-assessment of where it needs work. Monday is the heaviest admin day: the week's training schedule drops (usually from the platoon sergeant at Friday's release, but Monday morning reveals what got cut, what got added, and what the company gunny just recalled). Monday morning is when you pre-walk the squad's readiness for whatever the week holds — gear, personnel, training materials, composite score check for any Cpl whose Sgt board window is approaching. The afternoon is the first counseling slot for any Marine who needs a Monday Pro/Con sit-down. Tuesday through Thursday is the squad training rhythm. Squad collective task rehearsals during shop time — squad attack and defense, urban operations, patrol base operations, react to contact at squad scale — rehearsed with each Cpl running their fire team's portion and you running the squad-level integration. MCMAP sustainment on the platoon's mat day. TCCC drills with the platoon corpsman. The platoon sergeant pulls the squad for platoon lanes once the squad has rehearsed cleanly at the squad level; the company gunny pulls the platoon for company lanes once the platoon is ready. The Sgt 0369 who runs the squad's training with doctrinal rigor — T&R task calendar tracked, rehearsals honest, AARs specific — is the Sgt whose squad the platoon sergeant points to during the battalion's pre-deployment readiness brief. For the Sgt 0369 specifically, one period per week — Friday afternoon or the occasional Tuesday morning before work — should be invested in the battalion-level doctrinal work that the SSgt advisory billet requires: reading a chapter of MCRP 3-10A.4 or MCWP 3-10, attending a battalion training planning meeting with the company gunny when the opportunity arises, or reviewing a battalion operations plan the platoon commander shares for professional development. The garrison week that runs purely at rifle-company level without any battalion-level doctrinal investment is the week that slows the Sgt 0369's preparation for the SSgt billet. MEU PTP workups and field rotations collapse this investment time entirely — use the garrison windows deliberately.

Key Skills — How to Drill Each

  1. 01
    Run the squad — 12-13 Marines, three fire teams, the scheme of maneuver back-brief, the MCCRE lane, and the sensitive items count — at the standard the platoon sergeant does not have to correct.
    The 0369 Sgt is still a squad leader first. The designation does not elevate the Sgt above the squad leader billet — it implies a higher baseline expectation for the squad leader role. Build the squad's collective task readiness 90 days before any external evaluation. Run your own terrain model rehearsals with the Cpls on Wednesday evenings. Walk the squad's sensitive item manifest with each Cpl the Sunday before the Monday platoon sergeant inspection. The platoon sergeant who never has to correct a 0369 Sgt squad is the platoon sergeant who writes a competitive FitRep input.
  2. 02
    Write FitRep Section A input for three Cpls per cycle that the reporting senior (platoon commander) signs without editing — observed behavior, action-result-impact, specific enough to survive battalion FitRep review.
    The FitRep Section A under MCO 1610.7 is the Sgt's first formal writing product in the Marine Corps personnel system. Write in observed-behavior terms: what the Cpl did, in what specific context, with what measurable result. 'Led the fire team to the highest collective task completion rate in the company during the battalion MCCRE evaluation' is a Section A narrative. 'Demonstrated superior leadership skills' is not. The platoon commander builds attribute marks off your Section A; the company commander reads it in the battalion FitRep review. Write 200 specific words instead of 400 generic ones. The Sgt 0369 who writes FitRep Section A that the reporting senior quotes back approvingly is the Sgt the platoon commander writes a 'must select' input for.
  3. 03
    Brief a squad scheme of maneuver at the platoon back-brief — graphics, control measures, fire support plan, sustainment, casualty plan, and the secondary action if the primary fails — at the standard that shows the platoon commander the squad can operate independently.
    The scheme of maneuver brief is the squad leader's public credibility event. Use the SMEAC format. Know your control measures cold — line of departure, support-by-fire positions, assault position, objective, limit of advance, fire support coordination measures. Build the casualty plan named: which Marine carries which CCP marker, what is the 9-line route, where is the landing zone. Rehearse the brief with the Cpls 24 hours before the platoon back-brief so they can run the fire team pieces. The platoon commander who never has to rewrite a Sgt 0369 scheme of maneuver is the platoon commander who gives the squad the independent reconnaissance tasking.
  4. 04
    Understand the 0369 MOS mechanics — what the designation means for your SSgt billet assignment, how the reclassification affected your composite score and FitRep pool, and what the Career Course and SNCO selection board timeline looks like in the 0369 MOS community.
    The 0369 MOS at Sgt is a small pool and the billet assignment mechanic at SSgt is different from the line rifle company Sgt's default. Pull the current MARADMIN for 0369 SSgt billet availability and read the Monitor's guidance on the MMOA-4 website (verify current site) for the 03xx/0369 MOS community. Talk to the battalion SgtMaj about what the SSgt billet slate looks like for 0369 Marines and whether the designation affects the Career Course priority queue. The Sgt who understands their own MOS's career mechanics is the Sgt who makes deliberate decisions rather than arriving at the SSgt board surprised.
  5. 05
    Develop two of your three Cpls toward Sergeants Course readiness — composite score management, Corporals Course completion, fire team leadership reps in front of the platoon sergeant.
    Your three Cpls are the bench for the battalion's next Sgt cohort. Each of them is on a composite score timeline, a Corporals Course enrollment, and a fire team leadership development arc. Monthly counseling sessions: where they are on the cutting score, what they can do this quarter to close the gap, what the next Corporals Course slot looks like. Give each Cpl a squad-level lane to run while you observe — terrain model, PCC/PCI walk, the brief to the fire team. The Sgt 0369 who pins two Cpls to Sgt during the squad leader tour is the Sgt the SgtMaj mentions by name to the battalion S-1 when the SSgt billet list is being assembled.
  6. 06
    Navigate the 0369 lateral move implications for the SSgt billet — advisory role in a battalion S-3 versus squad leader in a rifle company — with the Career Course and SNCO board timeline built around the likely assignment.
    The 0369 SSgt billet is often an operations or advisory role at battalion or regimental level rather than the platoon sergeant billet a 0311 SSgt expects. Understanding that the billet profile is different — and that the FitRep writing at the SSgt level will describe advisory and planning performance rather than pure squad-leader execution — means the Sgt 0369 should be building familiarity with the battalion COC and the battalion training planning process before the SSgt designation takes effect. Volunteer to serve as the squad leader representative in the company training planning meetings. Attend the battalion training conference with the company gunny. Understand how the S-3 builds the training calendar and what the battalion METL drives. The SSgt 0369 who arrives at the advisory billet with zero COC familiarity takes a quarter to catch up; the one who invested at Sgt is credible on day one.

Manuals & References — What Chapters Matter

  • MCRP 3-10A.3 — Marine Rifle Squad
    The doctrinal authority the platoon sergeant and platoon commander quote in the squad scheme back-brief. At Sgt 0369, own this manual at the chapter level: the squad in the offense, the squad in the defense, the squad in urban operations, the patrol base operations chapter, the squad-level control measures. The good squad leader briefs from internalized doctrine, not a manual read at the range the night before the back-brief.
  • MCRP 3-10A.4 — Marine Rifle Platoon
    You operate at platoon level now in the planning phase. The Sgt 0369 who understands the platoon commander's doctrinal framework — how the platoon's offensive and defensive doctrine meshes with the squad leader's scheme — is the squad leader the platoon commander trusts with an independent mission tasking. Read chapters 4 and 5 (offensive and defensive operations) before the MEU PTP workup.
  • NAVMC 3500.44 — Infantry T&R Manual (Sgt-level squad collective tasks and 0369 individual tasks)
    The T&R Manual defines every collective task your squad is evaluated against and every individual task you are accountable for as a Sgt in the 03xx/0369 field. At Sgt 0369, you sign off on 1000-level individual tasks for your Marines and you are evaluated on 2000-level squad collective tasks. Print the Sgt-level task list and walk it with the platoon sergeant during the first 30 days of the squad leader tour.
  • MCO 1610.7 — Performance Evaluation System
    You write FitReps on Cpls now under MCO 1610.7. The FitRep policy chapter, the Section A narrative input guidance, the attribute marks rubric, and the reporting senior and reviewing officer responsibilities are your working knowledge. Verify the current revision on Marines.mil — the PES has been updated across recent revisions. The Sgt 0369 who writes FitRep Section A with the precision of a Marine who has read the regulation has a competitive advantage over the Sgt who writes by feel.
  • MCO 1300.8 — Marine Corps Lateral Move and Reclassification Policy
    The governing document for your own 0369 designator. Understand what the reclassification means in terms of billet assignment eligibility, career planner read, and the SSgt board profile. If the lateral move to 0369 was processed at the Sgt level (earlier than the standard SSgt entry), understand why — and understand what the battalion SgtMaj and the Monitor know about your package as a result.
  • MCO 1400.32 — Marine Corps Promotion Manual (SNCO selection board mechanics)
    The SSgt centralized selection board runs under this manual. Unlike the cutting-score system that governed Cpl and Sgt promotions, the SNCO board is a paper-record review. Understand the relative-value mechanic, the FitRep attribute marks structure, and the composite inputs that feed the competitive package. The Sgt 0369 who understands the board's read on their FitRep record is the Sgt who can build a competitive SSgt package deliberately rather than retrospectively.
  • MCWP 3-10 — MAGTF Ground Combat Operations
    The operational context that the 0369 SSgt advisory role operates within. At Sgt, reading MCWP 3-10 is preparation for the SSgt billet, not current billet requirement. The chapters on the rifle battalion in MAGTF offensive and defensive operations are the doctrinal context for the battalion S-3 advisory work that the 0369 SSgt will be doing. Read the battalion-level chapters before the SSgt board cycle.

Standards — How to Hit Each

  • Sergeants Course completed and Career Course slated or enrolled; SSgt centralized selection board eligibility maintained.
    Sergeants Course in-residence at the regional NCO academy is the PME gate the board reads. Career Course is the next tier — the SSgt board for 0369 Marines is a small, experience-heavy pool, and the Sgt who has Career Course locked in 12-18 months before the board cycle is competitive. Pull the in-residence Career Course slot through the platoon sergeant and the company gunny as early as the operational calendar allows. If in-residence is not feasible because of deployment timing, CDET distance education is the fallback. Either way, close the gate.
  • 1st-Class PFT and CFT under MCO 6100.13; Black Belt MCMAP target.
    At Sgt 0369 you are not just hitting physical standards for yourself — you are setting the squad's physical bar and the formation watches it. 1st-Class is the minimum; the Sgt 0369 who is at the company's top physical performer tier is the Sgt the company gunny points to during the battalion readiness brief. Brown Belt is the Sgt minimum in most commands; Black Belt is the standard the company gunny notes in the narrative and the SSgt board reads. Schedule the belt tapes with the unit's senior MCMAP instructor and build the Black Belt timeline 12-18 months out.
  • FitRep relative-value placement above battalion Sgt average in consecutive cycles; squad MCCRE collective task rating at the unit standard or above.
    The SSgt centralized selection board reads FitRep relative-value placement more than any other single input in the competitive package. Know where you are in the company's Sgt relative-value pool — ask the platoon sergeant directly. The company commander reads every Sgt FitRep at the battalion FitRep review; the Sgt 0369 who is not visibly in the top third of the Sgt pool in the company is not competitive for the SSgt board in a small MOS. The MCCRE squad rating is the objective performance input that the reporting senior cites in the FitRep narrative — it travels.
  • Squad leader FitRep writing quality: three Cpl FitRep Section A inputs per cycle that the reporting senior does not edit.
    The FitRep Section A the Sgt writes for each Cpl is both a leadership output and a demonstration of writing craft. The platoon commander who has to rewrite the Section A because it is generic is the platoon commander who writes a weaker narrative in the Sgt's own FitRep. The Sgt 0369 who writes three specific, action-result-impact Section A inputs per cycle — inputs the platoon commander quotes back approvingly — is the Sgt who the platoon commander confidently ranks in the top relative-value placement in the company.
  • Expert rifle qualification current; source MOS T&R task currency maintained through the lateral move.
    The 0369 designator does not relieve the Sgt of source-MOS qualification currency. Expert rifle qualification is the default expectation; a Sgt 0369 who is not current on Expert is not credible in the advisory role the MOS points toward. Source MOS T&R tasks — collective tasks from NAVMC 3500.44 in the source 03xx field — remain the evaluation baseline. Stay current.

Technical Mistakes — Concrete Consequences

  • Verbal counseling only — no page-11 entry, no counseling sheet on file, for any recurring or significant fire team issue.
    A verbal counseling the Sgt swears they gave does not exist in the administrative record. When a Marine appeals a pro/con mark, files an IG complaint, or pushes back on a course of action recommendation, the chain pulls the counseling file. The gap the chain finds is used against the Sgt who gave the verbal counseling and remembers it clearly. Five minutes typing a page-11 entry under the current Marine Corps administrative policy is a year of administrative protection. The Sgt 0369 who is heading toward an SSgt advisory billet should be building the documentation habits the senior billet requires from day one.
  • Treating the 0369 designation as an exemption from the squad leader execution standard — expecting to be assigned to a battalion COC advisory role at Sgt rather than running a rifle squad.
    The 0369 designation at Sgt does not automatically generate a battalion or regimental advisory billet — the Marine Corps assigns Sgts to the billets available, and most Sgt 0369s will run a rifle or weapons company squad regardless of the MOS designator. The Sgt who arrives at the rifle company expecting an operations billet and gets assigned as a squad leader, and then runs a mediocre squad as a result of misaligned expectations, produces a weak FitRep record and the SSgt board reads the weak FitRep record. Run the squad.
  • Letting the FitRep Section A writing quality slide because the platoon commander 'always fixes it anyway.'
    The FitRep the platoon commander rewrites is the FitRep where the Sgt's leadership credibility is already compromised. The platoon commander who rewrites Section A inputs may still write a competitive narrative for the Sgt's own FitRep, but the trust level is different from the platoon commander who never has to edit a word. The trust level shows in the relative-value placement. For a Sgt 0369 competing on the SNCO board, that relative-value placement is the margin.
  • Missing the SAPR or EO reporting window to 'handle it inside the squad' and protect the Marine from the system.
    Sexual Assault Prevention and Response under MCO 5354.1 and Equal Opportunity under MCO 1000.9 have defined reporting timelines and mandatory reporter responsibilities at the Sgt level — verify current revisions on Marines.mil. The Sgt who holds a SAPR incident inside the squad without routing it violates the order, creates negligent-supervision liability for the chain, and usually leaves the Marine in worse condition than if the system had been used. The 0369 SNCO track requires that the Sgt demonstrate the administrative maturity to route these correctly — not the personal loyalty to absorb them.
  • Not building familiarity with the battalion COC and the battalion training planning process during the Sgt tour because the current billet is in a rifle company.
    The 0369 SSgt billet often places the Marine in a battalion operations or advisory role on day one of the SSgt tour. The Sgt who arrives at that billet having never attended a battalion training conference, never read an S-3 training plan, and never understood how the battalion METL drives the company training calendar takes a quarter to become credible. The Sgt 0369 who volunteers to attend battalion-level events and reads the battalion METL arrives at the SSgt billet ready on day one. The company gunny makes this happen if you ask.

Career Decisions at This Rank

  • Stay in the 0369 track toward SSgt operations/advisory billet versus pursuing a lateral move pipeline (MARSOC A&S, Recon BRC) before the window narrows
    At Sgt with the 0369 designator, this is the defining career fork. The 0369 track runs toward an SSgt billet in a battalion or regimental operations element — advising the S-3, reviewing training plans, acting as the senior enlisted infantry expert in the COC. The MARSOC and Recon pipelines run toward a fundamentally different career arc — smaller community, higher OPTEMPO, different post-service market, and a lateral MOS change that affects the 0369 designator. The window for MARSOC A&S at Camp Lejeune and Recon BRC at Coronado narrows progressively through the Sgt years; past mid-Sgt the age and rank windows tighten. The honest question: do you want to be the battalion's senior infantry advisor in ten years, or do you want to be a Marine Raider or a Recon Marine? Those are different careers. Both are legitimate. The decision should be made before the window closes, not by default.
  • B-billet pipeline at Sgt — DI duty at MCRD, MSG at Quantico, Recruiter School in San Diego — and its effect on the SSbt board profile
    B-billet at Sgt with the 0369 designator adds a visible tour identifier at the SSgt board — the DI duty identifier is a known positive signal, the MSG embassy postings add professional development depth, and the 8411 Recruiter MOS via Recruiter School opens a tour in a civilian community. Each B-billet also delays the direct SSgt advisory billet path because it occupies a tour slot. The Sgt 0369 who does DI duty before competing for SSgt may arrive at the SSgt board with a stronger FitRep profile but less direct advisory track preparation than the Sgt who stayed in the line infantry role. Talk to 0369 GySgts who did a B-billet at Sgt — the honest math on whether it helped the career is in their stories, not in the recruiting materials.
  • Career Course in-residence versus distance education (CDET), and its timing relative to the SSbt centralized selection board
    The Career Course PME completion is the competitive gate the SSbt board reads for 0369 Marines. In-residence delivery at the regional NCO academies (Camp Lejeune, Camp Pendleton, Camp Foster Okinawa) is materially more rigorous than CDET distance education, and the in-residence network of Sgts and SSgts you meet from across the Corps is professional capital that the distance education format does not replicate. The SSbt board reads PME completion; it does not weight in-residence versus distance differentially in the record — but the in-residence experience improves the FitRep narrative because it produces a Sgt who can write and brief at a higher level. The timing: lock in Career Course 12-18 months before the projected SSbt board cycle. The Sgt who is still finishing CDET units during the SSbt board year is not competitive against the Sgt who completed in-residence a year before the board.
  • Reenlistment at Sgt with the 0369 designator — indef reenlistment, station-of-choice for SSbt billet, or EAS
    The reenlistment math at Sgt 0369 is different from the source 03xx MOS reenlistment because the billet slate for 0369 SSgts is small and the designation implies a specific career track. Pull the current MARADMIN for SRB bonus amounts for the 0369 Sgt tier — they vary year over year and are not always equivalent to the source MOS bonus. The reenlistment option that aligns with the SSbt billet track — indef reenlistment with a station-of-choice or school-of-choice option that positions the Sgt for the next available Career Course slot and the subsequent SSbt advisory billet — is the one worth building the conversation around. The career planner at the battalion or station level knows the current SACO options for 0369 Marines; the Sgt who walks into that conversation with the Career Course timeline and the SSbt board window already researched is the Sgt the career planner can actually help.
  • Commissioning at Sgt via MECEP or ECP — and whether the 0369 track is better served by an enlisted or officer path
    The Marine Enlisted Commissioning Education Program (MECEP) and the Enlisted Commissioning Program (ECP) both have Sgt-eligible windows. MECEP keeps you on active-duty pay while completing the bachelor's degree at a participating university; ECP is the direct commission for Sgts with a bachelor's already in hand. The 0369 designation actually strengthens a commissioning package because it signals that the Marine was on the senior infantry NCO track — battalion-level advisory experience is visible in an officer's professional background. The honest test at Sgt: are you better at executing the infantry mission or at building the systems and policies that govern it? Marines who want to run squads for a career make better 0369 SNCOs. Marines who want to shape doctrine and command at the company and battalion level make better infantry officers. Talk to the company commander and the battalion XO. Their read on whether you belong in the officer pipeline is the most useful input you will get on this decision.

How the Seat Varies by Unit Type

  • Standard infantry battalion (1st/2d/3d MarDiv) — rifle or weapons company squad leader
    The most likely assignment for a Sgt 0369 at this tier. Squad leader in a rifle company (0311/0331 squads) or weapons company (0341 mortar section, 0331 H&S machine gun section, 0352 anti-tank section depending on current TO&E and Force Design decisions — verify current structure against active MARADMIN). The MEU PTP workup, ITX at Twentynine Palms, UDP Okinawa, and MEU deployment afloat define the operational rhythm. The platoon sergeant is a SSgt, the company gunny is a GySgt, and the battalion SgtMaj is reading FitReps on every squad leader within 90 days of taking the seat. The 0369 designator does not change the billet expectation — it may eventually affect the SSbt billet assignment slate.
  • Battalion or regimental operations element (edge case at Sgt — more common at SSbt)
    A Sgt 0369 assigned directly to a battalion S-3 or regimental operations element at the Sgt level is an uncommon assignment reflecting either an exceptional early lateral move or a specific billet fill. If this is your assignment: your day is the battalion training planning process — reviewing T&R event schedules, attending the battalion training conference as the enlisted infantry expert input, and supporting the S-3 in the operations center during major training events. The FitRep writing challenge is different from the rifle company squad leader — your Section A describes advisory performance, not squad execution. The company gunny and the battalion SgtMaj are watching whether you produce analytical value or just manage calendars.
  • School of Infantry — instructor billet (SOI-East at Camp Geiger, SOI-West at Camp Pendleton)
    A Sgt 0369 assigned to SOI as an instructor teaches the Infantry Marine Course (IMC) / ITB curriculum — the same training pipeline the Sgt went through. Schoolhouse hours with instructor-duty responsibilities and a fundamentally different day than the line rifle company squad leader. The FITREP profile at SOI is strong if you invest in instructor development; the operational rep is weaker because the billet is not a fleet deployment. For the 0369 track, the SOI instructor billet is a professional development opportunity if the Sgt can tie the schoolhouse experience back to the advisory role — what the infantry training pipeline produces, what gaps the ITB graduates arrive at the battalion with, and how the T&R standards at SOI compare to the battalion MCCRE standard. The Sgt 0369 who emerges from an SOI tour with a detailed understanding of the infantry training pipeline has useful advisory input the battalion S-3 will not get from a Sgt who went straight from a line company to the operations billet.
  • MEU BLT afloat — squad leader on amphibious shipping
    The formative operational experience for the 0369 Sgt. Embarked on the Battalion Landing Team aboard LHD/LPD/LSD, operating under MEU-SOC certification with the Navy ARG. The training days in the flight deck and well deck, the limited space for squad-level rehearsal, the persistent contingency posture during the MEU cycle, and the port visits as the visible Marine NCO face of the squad all contribute to the operational reputation the SSbt board reads in the FitRep narrative. The Sgt 0369 who runs a clean squad through a full MEU deployment has a FitRep narrative that describes real operational performance — not just garrison training effectiveness. The MEU tour is the single most valuable Sgt-level operational experience for the 0369 career track.
  • UDP Okinawa rotation — III MEF assignment (Camp Schwab or Camp Hansen)
    Unaccompanied six-month rotation under III MEF. Land-based, Jungle Warfare Training Center at JWTC on Okinawa, partnership training with allied forces (Korean Marines, Japanese Ground Self-Defense Force, Philippine Marines, Australian Defence Force), and Indo-Pacific contingency posture. Different operational texture than the MEU afloat — more land-based, more multinational partner training, less amphibious integration. For the 0369 track, the UDP Okinawa tour's partnership training dimension is professional development: the Sgt who has worked with Korean and Japanese infantry counterparts has the comparative context that a senior infantry advisor uses when the battalion is planning a partner-nation training event or a combined exercise.

What Good Looks Like at This Rank

The good Sgt 0369 is the squad leader the platoon sergeant sends to the company's hardest MCCRE lane because this Marine's squad runs the task to standard without prompting and AAR honestly when it does not. The 0369 designation is visible in how this Sgt builds the squad's training program — with doctrinal rigor, T&R task calendar accountability, and FitRep Section A writing that names observable behavior instead of generic praise — not in how they introduce themselves at the platoon office. The FitReps on the three Cpls are in before the due date, specific enough that the platoon commander calls the Sgt to ask follow-up questions about each Cpl's Section A because the narrative actually describes what they did. The squad's MCCRE rating is above the company average not because the squad got lucky on the lane, but because this Sgt ran terrain model rehearsals with the Cpls three weeks before the evaluation and built the secondary action into the squad scheme so the fire teams knew what to do when the primary failed. The platoon sergeant trusts the squad to operate independently on the MEU contingency response mission because the squad has rehearsed independent operation in every quarterly training event. The SSgt board prep is deliberate, not reactive. This Sgt knows their relative-value placement in the company's Sgt FitRep pool, knows what the current MARADMIN cutting score trend shows for 0369 SSgt selection rates, and has a Career Course enrollment that sits 12-18 months before the projected board cycle — not because someone reminded them, but because they read the promotion manual at Cpl and have been building the competitive package since the Sgt pin-on. The battalion SgtMaj knows this Sgt's name by month six of the squad leader tour. That recognition is not an accident — it is the result of running a clean squad, writing clean FitReps, and building the source-MOS execution record that makes the 0369 designation credible when the SSgt advisory billet opens.

Preview — The Next Rank

SSgt (E-6) is where the 0369 MOS comes fully alive. The Sgt who has built a competitive FitRep record as a squad leader, completed Career Course, and earned a Black Belt MCMAP while holding Expert rifle qualification arrives at the SSbt board as a candidate the board reads seriously. Once selected, the SSbt 0369 is most commonly assigned to a battalion or regimental operations element as the senior infantry NCO advisor — the Marine the battalion S-3 officer calls before the training plan goes out, the SNCO who sits in the COC during the major exercise and ensures the infantry tactical picture matches the doctrine, and the Marine who writes FitReps on two to three Sgts per cycle describing advisory and planning performance rather than just squad execution. The transition from squad leader to operations advisor is the defining professional shift in the 0369 career. The SSbt who spent the Sgt tour investing in battalion-level doctrinal familiarity — attending training conferences with the company gunny, reading MCWP 3-10 and the MCRP 3-10A series through the platoon-level doctrine — arrives at the advisory billet ready on day one. The SSbt who spent the Sgt tour running a clean squad but never looking above the platoon level takes a quarter to become credible in the operations element. The difference between those two SSgts is the deliberate preparation investment during the Sgt tour. The GySgt board — the next promotion gate after SSbt — runs through the Marine Corps's centralized selection board system with an even smaller comparison pool than the SSbt board. At GySgt, the 0369 Marine is the battalion's senior infantry operations expert, advising the battalion commander directly on employment doctrine and training program quality, writing FitReps on SSgts in the operations element, and beginning the 1stSgt versus MSgt career track conversation that defines the second half of the senior NCO career. Plan Career Course completion before the SSbt board and the SNCO Academy Advanced Course on the GySgt timeline. The senior 0369 career is front-loaded with investment decisions — the ones made at the Sgt level compound all the way to SgtMaj.
FAQ

0369 E5 — Frequently Asked Questions

Q01What does a E5 0369 (Infantry Unit Leader) actually do?
The 0369 designator is not the typical primary MOS for infantry Sgts — they are serving in 0311, 0331, 0341, 0351, or 0352 billets, running squads, writing FitReps on Cpls, and building the NCO leadership record that makes a senior leadership reclassification at SSgt plausible.
Q02What's the most important thing to know as a E5 0369?
The Sgt who carries 0369 as a primary MOS is in one of two situations: an administrative edge case in the Marine Corps personnel system, or — more likely — a Marine who recently completed a lateral move from a source 03xx MOS and is navigating what the designation change means for their career.
Q03What does a typical day look like for a E5 0369?
Time-blocked day at the E5 0369 rank tier: 0500 Wake. Check the platoon group chat for overnight incidents. As a squad leader, any liberty issue in your squad is your notification first — before the platoon sergeant finds out another way, 0530 PT formation. You take accountability for the squad (you + three Cpls + 9-10 LCpls/PFCs depending on current TO&E), report to the platoon sergeant (SSgt). Missing Marine is your problem before the platoon sergeant asks, 0545-0700 Unit PT. You set the squad's pace. Ruck days, run days, strength days,…
Q04What mistakes get E5 0369 soldiers fired or relieved?
Treating the 0369 designator as a title or seniority signal at the Sgt level rather than a designation that requires consistent performance to validate. The SgtMaj who reads the Sgt's record and finds a weak squad leader tour behind the 0369 designation is not impressed by the designation; Missing or deferring the Sergeants Course and Career Course PME windows because the operational tempo is high. The SSgt board reads PME completion;…
Q05What career decisions matter most at the E5 0369 rank tier?
Stay in the 0369 track toward SSgt operations/advisory billet versus pursuing a lateral move pipeline (MARSOC A&S, Recon BRC) before the window narrows — At Sgt with the 0369 designator, this is the defining career fork. The 0369 track runs toward an SSgt billet in a battalion or regimental operations element — advising the S-3, reviewing training plans, acting as the senior enlisted infantry expert in the COC. The MARSOC and Recon pipelines run toward a fundamentally different career arc — smaller community, higher OPTEMPO, different post-service market,…
Q06What's next after E5 for a 0369 (Infantry Unit Leader) in the Marines?
SSgt (E-6) is where the 0369 MOS comes fully alive.
Q07What manuals and regulations does a E5 0369 need to know cold?
MCRP 3-10A.3 — Marine Rifle Squad: the doctrinal authority for the squad leader billet the 0311/0331/0341 Sgt is executing.; NAVMC 3500.44 — Infantry T&R Manual: Sgt-level collective tasks and training standards in the source 03xx MOS.; MCO 1610.7 — Performance Evaluation System: FitRep policy at the Sgt level; you write FitReps on Cpls now.

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards