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0369E6

Infantry Unit Leader

E-6 (Staff Sergeant) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

The 0369 designator at SSgt is not a reward for surviving the infantry — it is a selection for a specific advisory function that requires you to know the infantry cold and then speak about it in a planning room. The GySgt board reads 0369 FitReps for evidence that you actually improved the formation's tactical competence, not that you managed a staff section without incident. If your Section A language describes a good administrator, you are describing the wrong job.

The Honest MOS Read
The day your 0369 designator populates in MCTFS is the day the job description changes in a specific and non-negotiable way. You are no longer the senior infantry NCO inside a company — squad leader, platoon sergeant, company gunny — whose job is to run Marines through the tactical problems the battalion assigns. You are now the senior infantry NCO outside the company who the battalion and regimental staff calls when they need to know whether the tactical plan is executable, whether the training program is honest, and whether the standards being applied to the infantry T&R events are the standards that NAVMC 3500.44 actually requires or the watered-down version that the training schedule can comfortably fit. That is a different kind of credibility than the credibility you built at 0311 or 0331 or 0341. The company gunny credibility was built on Marines watching you run a range, watching you brief an OPORD, watching you carry a rucksack at the same pace as the Sgts and not make a production of it. The 0369 SSgt credibility is built on the rifle company GySgts watching you read their training plan and tell them, in precise terms referenced to NAVMC 3500.44, why two of their T&R events are understandardized and what the fix looks like. One is about what you can do. The other is about what you understand. You need both, but you are being paid for the second one now. The battalion S-3 billet is the typical home for the 0369 SSbt. You are the battalion's senior infantry enlisted in the operations section — which means you sit in the COC during training events, you build the range package for the battalion's next training cycle, you review the rifle and weapons companies' quarterly T&R event completion against the battalion METL, and you brief the operations officer on the gaps before the regimental review comes and finds them first. The S-3 officer you advise is often a captain or major who has been through the MAGTF Staff Training Program and can read a terrain model and write a six-paragraph order. What they cannot do is walk into a rifle company's training plan and tell the company gunny where the shortcut is hiding. That is your function. Two things the SSbt 0369 tends to underinvest in: FitRep language precision and Career Course timing. The FitRep Section A you write on a Sgt in your operations section describes either a tactical advisory outcome — 'coordinated the battalion's MCCRE T&R task review, identified four critical task deficiencies in Weapons Company's pre-deployment training plan, drove the remedial training cycle that closed all four gaps before the MEF inspection' — or it describes an administrative functionary — 'maintained the operations center calendar, drafted meeting minutes, supported the S-3 officer.' The board that reads the 0369 MOS designator next to the second version of that FitRep is confused. The board that reads it next to the first version sees an infantry leader contributing from a staff billet. That distinction is your responsibility, not the reporting senior's. Career Course timing matters in a small MOS. The 0369 community is not large. The pool of SSgts competing for the GySgt board is not large. The schools slot that fills up because you did not put your packet in early is a problem that compounds — missed Career Course means ineligible for GySgt board, which means the source MOS timeline you had in mind when you took the lateral move breaks. Get the packet in before the deployment cycle puts it six months out of reach.
Career Arc
  • 01SSbt receives 0369 designator through lateral move per MCO 1300.8 from source 03xx MOS (most commonly at SSbt, occasionally at GySgt for senior lateral movers); initial billet is battalion S-3 senior enlisted or regimental operations section senior infantry NCO.
  • 02First 12-18 months: orient to the planning cycle, build the battalion's T&R event completion tracking, write the first cycle of Section A FitReps on Sgts in the operations element with specific infantry advisory language rather than general administrative language.
  • 03Career Course (SNCO Academy) packet submitted — timing is early in the SSbt window, not deferred to mid-career; the small MOS and competitive GySgt board mean the PME gate matters earlier than it does in larger occupational fields.
  • 04Pre-deployment training cycle: the 0369 SSbt's value is most visible here — reviewing company-level training plans, running the battalion's pre-deployment T&R evaluation, and producing the gap analysis the battalion SgtMaj uses to decide where to allocate the last three months of garrison training time.
  • 05Deployment or major exercise rotation: the operations-billet 0369 SSbt functions as the battalion's senior infantry enlisted during the COC watch rotation, the planning cycle for company-level tasks, and the training events that happen in theater.
  • 06GySgt board: FitRep history is the primary driver; the board reads the 0369 MOS designator and expects Section A language that demonstrates infantry advisory outcomes, not staff management. The comparative value is set in a small pool — every FitRep in the file is visible.
  • 07Post-selection GySgt: first GySgt assignment likely remains in an operations billet — battalion operations chief or regimental senior infantry SNCO — with the 1stSgt track conversation beginning immediately with the battalion SgtMaj and the MOS Monitor.
Common Screwups
  • ×Conduct incident — DUI, domestic violence, financial misconduct, or any Article 92/134 violation — at the SSbt SNCO tier in a small MOS is career-terminal. The 0369 community is small enough that conduct issues are visible to the community's leadership structure, and the FitRep narrative cannot recover what a page-11 entry documents permanently.
  • ×Fitness failure under MCO 6100.13: the senior infantry NCO advising the battalion on ground combat readiness who fails their own PFT or CFT has removed the credibility the billet requires. The infantry community at every level watches the SNCO's physical standard, and a fitness failure at SSbt is a career wound in a promotion-competitive MOS.
  • ×Falsified FitRep language — describing advisory outcomes that did not occur, inflating the SSbt's role in a training event, or writing Section A language for a Sgt that does not reflect what the Sgt actually did — is an integrity violation that ends the career in the Marine Corps's FitRep-centric promotion system.
  • ×OPSEC violation: posting operational imagery, unit locations, or training specifics to personal social media during or after a deployment or training exercise. The 0369 SSbt in an operations billet has access to planning information that has real operational security implications, and a social media post that crosses the line is a conduct incident and a professional credibility failure simultaneously.
  • ×Missing the Career Course slate and failing to recover: the SSbt who misses the first available Career Course slot without a command-verified reason and does not put the next packet in immediately is building a promotion file that explains the PME gap to the GySgt board without the SSbt being present to explain it.

A Day in the Life

  • 0530-0630PT — battalion formation or independent run. The 0369 SSbt in an operations billet does not have a platoon to run with; battalion PT formation or the S-3 section PT schedule. 1st-Class PFT pace is the personal floor, not the aspirational target. Physical standard is visible when the line company SNCOs are watching.
  • 0630-0715Hygiene, uniform, transit to the battalion COC or the regimental S-3 building depending on the current billet location.
  • 0715-0800Morning brief prep: review the battalion training schedule for the day, check overnight message traffic relevant to the operations section, brief the S-3 officer on any overnight changes to the training program before the commanding officer's morning brief.
  • 0800-0900Commanding Officer's morning brief (attendance as the senior 0369 enlisted in the section, or as designated briefer for the training program segment). This is the venue where gaps in the training program become visible to the command — the brief the 0369 prepares for this forum must be accurate.
  • 0900-1130Primary work period: training plan review for the current input cycle, T&R event completion tracking update, range package development for the next quarter's training calendar, or planning cycle support depending on where the battalion sits in the training cycle. This is the block where the 0369 billet's actual work happens. No unnecessary meetings; protect this time.
  • 1130-1300Lunch and administrative break. Use the informal time in the company area for corridor conversations with rifle company GySgts — this is where the informal feedback on the training program comes in, before it is formalized in a brief or a written critique.
  • 1300-1500Afternoon work period: FitRep cycle (Section A drafts for Sgts in the section), mentorship meeting with a Sgt or SSbt from the line who is working through a planning problem, or coordination with the battalion S-4 and S-6 on the resource components of the next training event.
  • 1500-1630Operations section SNCO coordination: brief the battalion SgtMaj on the current training program status, flag any T&R task deficiencies identified in the current review cycle, update the battalion commander's training brief with current T&R event completion data.
  • 1630-1700End-of-day administrative close: message traffic review, next-day preparation, section closeout. S-3 shop typically releases at 1700 in garrison unless there is an evening training event.
  • 1700-1900Personal time, family, personal development. Evening PME reading (Career Course prep if not yet enrolled, current doctrine update if enrolled). The SNCO who uses this time for tactical reading — not social media — is the one whose Section A FitRep language will be specific enough to matter.
  • Field weeks / exercise rotationsThe 0369 SSbt's schedule inverts: the COC watch rotation runs 0200-0600, 0600-1000, 1000-1400 depending on the battalion's watch schedule. The SSbt advises at the battalion level during the planning phase, helps run the orders process for company-level tasks, and tracks T&R event completion in real time as the exercise unfolds. Sleep is a planning resource that the COC watch rotation manages poorly; the SSbt who does not build the sleep plan into the exercise schedule for the Sgts in the section will lose them to cognitive degradation by day four.

Weekly Cadence

The Monday to Friday rhythm in the operations billet is set by the battalion training schedule, which means the 0369 SSbt's week looks different from the line company SNCO's week in one important respect: there is no formation to run, no gear issue to manage, no platoon to account for. What there is instead is a steady stream of inputs — training plans, range packages, T&R event completion reports, regimental review briefs — that require the SSbt's advisory input on a rolling basis. The critical discipline of the operations billet is protecting time for the substantive work and not allowing the week to fill with meetings and coordination that could be handled with a message or a corridor conversation. In a pre-deployment training cycle the week intensifies dramatically. The battalion is executing ITX, MCCRE, SLTE, or a combined-arms exercise, and the 0369 SSbt is simultaneously tracking T&R event completion in real time, advising the S-3 officer on employment adjustments during the execution phase, and producing the gap analysis brief the battalion SgtMaj needs for the post-exercise review. The Friday of a heavy exercise week often ends with the SSbt writing the after-action documentation for the infantry training components — what was evaluated, what was passed, what was failed, what the remedial plan is — that goes into the formal unit record. In garrison between major training events, the rhythm is quieter but the work is more deliberate. This is when the 0369 SSbt builds the battalion's doctrine resource library, conducts the mentorship sessions with line company Sgts and SSgts, reviews and submits FitRep drafts, and prepares the Career Course packet. The SSbt who treats the garrison window between exercises as administrative downtime is the one who arrives at the next exercise behind on every deliverable.

Key Skills — How to Drill Each

  1. 01
    Review battalion and company-level infantry training plans against NAVMC 3500.44 T&R standards and provide written critique that improves the plan.
    Before you review anyone's training plan, build your own NAVMC 3500.44 reference deck — every critical task in the battalion METL cross-referenced to the T&R event that evaluates it, the standard the T&R event requires, and the conditions the evaluation must be run under. When a rifle company's training plan comes in, you are not reading it for format — you are reading it for task coverage, evaluation standards, and resource honesty. The critique that goes back has to name the specific T&R task, cite the specific NAVMC 3500.44 standard, and describe what the fix looks like in executable terms. 'This doesn't meet standard' is not a critique. 'T&R task 0311-CACL-1003 requires a 200-meter engagement under limited visibility at the company MCCRE evaluation — your range package has 0600 as the earliest range-start time, which means the battalion inspector arrives after morning fog burn-off and the standard is not evaluated' is a critique.
  2. 02
    Advise the battalion S-3 officer on infantry employment doctrine — scheme of maneuver, crew-served integration, fire support — from direct experience, not manual recitation.
    The difference between advisory credibility and manual recitation is the same as the difference between a GySgt who can tell you what the S-2 threat picture means for the company's MG employment and one who can tell you what chapter 4 of MCRP 3-10A.5 says about organic support weapons. Read the doctrine, verify your advice against it, and then say 'the doctrine calls for X, but the last time I ran this problem at the company level the friction point was Y — here is why and here is how we solved it.' That is what the planning table cannot get anywhere else. If your entire advisory contribution is reciting the manual, the S-3 officer can read the manual themselves.
  3. 03
    Write FitRep Section A language that accurately describes infantry advisory outcomes rather than administrative performance.
    Start every FitRep cycle by listing three to five specific infantry advisory events that occurred in the period — training plan reviews, planning sessions where your tactical input changed the outcome, T&R evaluations you led, gap analyses you produced. Those events are the raw material for Section A. Each one should have a verb ('identified,' 'corrected,' 'led,' 'designed,' 'briefed'), a specific output ('the battalion's pre-deployment T&R gap analysis'), and a consequence ('enabling the battalion to enter ITX with zero critical task gaps — a first in three rotation cycles'). The Section A that goes to the reporting senior for approval is a first draft, not a final product. If the reporting senior rewrites it and removes the specific advisory outcomes, you have a conversation — politely but directly — about what the 0369 billet's contribution actually looks like to the MSgt board.
  4. 04
    Lead a battalion-level infantry planning effort — from mission analysis through back-brief — as the senior enlisted whose tactical input shapes the plan.
    You cannot advise on something you have never done. If the battalion planning cycle runs without your direct participation — if you are reviewing and critiquing from the outside but not sitting in the planning tent for the mission analysis and course-of-action development — the advice you give is necessarily shallower than the advice the S-3 officer expected when they authorized the 0369 billet. Ask to sit the full planning cycle. Ask to run the back-brief portion. Ask to write the platoon-level task and purpose language in the OPORD annex. The SSbt who has built a complete battalion OPORD at least twice before competing for the GySgt board is a different kind of advisor than the one who has only reviewed other people's work.
  5. 05
    Mentor junior Sgts and SSgts from the line companies in the battalion tactical planning process.
    The advisory capacity you are building should not exist only in you. Every time a line-company SSgt comes to the operations section for help interpreting a T&R standard or understanding the format of a range package, that is a mentorship event. Walk them through the NAVMC 3500.44 task yourself instead of handing them the manual. Bring a Sgt from the line into the battalion planning cycle as an observer for one iteration before they face it alone as the platoon sergeant for their company's training event. The 0369 SSbt who builds advisory capacity in the line companies' SNCOs is a force multiplier; the one who hoards the institutional knowledge to protect the billet is a single point of failure.

Manuals & References — What Chapters Matter

  • NAVMC 3500.44 — Infantry T&R Manual
    This is the primary working document of the 0369 SSbt's advisory function. Section 2 defines the T&R event framework; the task lists by MOS define exactly what must be trained, evaluated, and documented for each infantry designator in the battalion. The critique you deliver on a company training plan has a NAVMC 3500.44 task number behind it or it is opinion. Read the entire current edition before your first review cycle, then tab-index the critical tasks for the battalion METL.
  • MCRP 3-10A.3 — Marine Rifle Squad and MCRP 3-10A.4 — Marine Rifle Platoon
    The advisory authority the 0369 SSbt carries in the battalion planning room rests on knowing these two manuals at the level of a former squad leader who understands both the doctrinal prescription and the friction that occurs when the prescription meets a real terrain model. MCRP 3-10A.3 Chapter 3 (employment) and MCRP 3-10A.4 Chapter 4 (offensive and defensive operations) are the sections the planning table references most frequently. Know them well enough to cite without looking.
  • MCRP 3-10A.5 — Marine Rifle Company
    The company level is where the 0369 SSbt's training plan review work lives — most of the plans coming to the operations section for critique are company training plans, and the company-level employment doctrine in MCRP 3-10A.5 is the standard the review is held against. Chapter 3 (offense), Chapter 4 (defense), and Chapter 5 (stability) map directly to the training plan evaluation tasks that show up at MCCRE.
  • MCWP 3-10 — MAGTF Ground Combat Operations
    The battalion exists inside a MAGTF framework, and the 0369 SSbt who advises only at the squad-to-company level without understanding the MAGTF context is giving advice that does not anticipate the operational constraints the battalion will operate under in a joint environment. MCWP 3-10 is the connection between what the rifle company trains and what the MEF expects the battalion to contribute. Read it once before your first pre-deployment training cycle and update your read after every major exercise.
  • MCO 1300.8 — Marine Corps Lateral Move and Reclassification Policy
    This is the governing document for your own 0369 designator. Know the terms of the reclassification — the prerequisites, the board process, the implications for promotion competition — so you can advise other infantry SNCOs in the battalion who are considering the lateral move. The 0369 SSbt who cannot accurately explain the MCO 1300.8 process to a GySgt asking about it is not fully owning the MOS they hold.
  • MCO 1610.7 — Performance Evaluation System
    FitRep writing at the SSbt tier is a technical skill, not a ceremonial one. MCO 1610.7 Chapter 3 defines Section A requirements, relative value ranking mechanics, and the reviewing official's role. The SSbt 0369 who produces Section A language that passes MCO 1610.7 scrutiny — specific outcomes, verifiable claims, MOS-relevant performance descriptions — is giving the board the documentation it needs to make a competitive selection. The one who writes administrative prose is giving the board a reason to pass.

Standards — How to Hit Each

  • Career Course (SNCO Academy) enrolled or slated before GySgt board window opens.
    The packet goes in before the battalion deployment cycle closes the window. Talk to the Career Course registrar at the SNCO Academy early — not at the last quarter before the board. In a small MOS, the seat competition is real and the Marine who waits until the S-3 can 'spare' them has often waited too long. The commanding officer endorsement and the SgtMaj signature on the Career Course nomination are conversations you have in garrison, not 90 days before a deployment.
  • Source MOS qualifications current: weapons qualification, T&R event currency from the 03xx source MOS.
    Make a qualification calendar and brief it to the battalion S-3 as part of your individual training plan. The 0369 SSbt who schedules their M4 qualification into the battalion range calendar the same way they schedule the rifle company qualification is modeling the standard they advise. The one who deprioritizes their own qualification because the staff billet does not have an obvious range requirement is the one who cannot tell the company gunny to hold Expert qualification standard with a straight face.
  • FitRep relative value above battalion average in consecutive cycles.
    The relative value ranking is the reporting senior's call, but the Section A content is your input. Write Section A with three to five specific, verifiable advisory outcomes. Brief the reporting senior on the outcomes before they write Section B — this is not politicking, this is ensuring your reporting senior has accurate raw material. The 0369 SSbt who delivers the reporting senior a strong, specific Section A and then discusses the relative value ranking in the context of the section's overall contribution is doing their career correctly. The one who submits a vague Section A and hopes the reporting senior fills in the gaps is making the reporting senior's job harder and their own GySgt board weaker.
  • At least one full battalion-level training event planned and executed in an advisory or lead-planner role.
    Ask for it. The battalion S-3 may not automatically assign the 0369 SSbt to the planning lead for a training event — the captain and major in the section often default to handling planning internally. The SSbt who asks to run the platoon-evaluation design for the next MCCRE cycle, proposes to develop the T&R assessment tool for the battalion's next training event, and delivers a complete draft is demonstrating the billet's value. One full planning cycle run by the 0369 SSbt, documented in the FitRep, is worth more to the GySgt board than three cycles of 'supported planning.'

Technical Mistakes — Concrete Consequences

  • Treating the operations billet as a retirement from the tactical work — advising on company employment standards without maintaining personal qualification currency.
    The rifle company GySgt who calls the 0369 SSbt for help interpreting a T&R evaluation standard and discovers the SSbt's own weapons qualification has lapsed stops calling. The 0369 SSbt advising from the operations section on standards the formation does not see them hold has credibility debt they cannot recover in the middle of a pre-deployment training cycle.
  • Approving company training plans without substantive critique because the S-3 timeline is compressed and the battalion needs the calendar cleared.
    The T&R task deficiency the 0369 SSbt approved in the planning stage appears as a critical task failure at the MCCRE evaluation. The MEF inspector's report names the deficiency. The battalion SgtMaj asks who reviewed the training plan and cleared it. The 0369 billet's entire value proposition is identifying the gap before the evaluation — approving without critique is not neutrality, it is a failure to do the job.
  • Writing FitRep Section A language for Sgts in the operations section that describes administrative tasks rather than infantry advisory outputs.
    The GySgt board reads the 0369 MOS designator and then reads a Section A that describes a staff administrator. The relative-value ranking and Section B narrative cannot fully recover a Section A that fails to place the Marine in an infantry advisory role. The Sgt whose FitRep does not describe 0369-relevant performance is disadvantaged at the board, and the SSbt who wrote the FitRep has failed the reporting obligation.
  • Allowing source MOS tactical currency to lapse — no field time, no range work, no exercise participation outside the COC.
    The 0369 SSbt who has not been outside the operations section in two years briefs the S-3 from memory rather than from current execution experience. The advice degrades incrementally. By the time the degradation is visible to the planning table, recovering the tactical currency requires time the pre-deployment calendar does not have.
  • Missing the Career Course enrollment window because the battalion could not spare the SSbt during the training cycle.
    Career Course completion is a board eligibility requirement. The SSbt who misses the window and does not immediately re-slot is ineligible for the GySgt board at the next cycle. In a small MOS with a narrow promotion timeline, one missed board cycle is not easily recovered — the FitRep gap that emerges while waiting for the next window compounds the PME deficiency.

Career Decisions at This Rank

  • 1stSgt track versus MSgt track: which path is the right one for this career?
    At SSbt in the 0369 MOS, this decision is not immediate but it is not distant either. The GySgt board is the next gate, and the GySgt who has not made the 1stSgt versus MSgt decision explicitly before arriving at the MSgt/1stSgt board is the one who gets slotted into the track that has the open billet rather than the track that fits the skill set. The 1stSgt track (the 8999 MOS designation) requires the 1stSgt school and leads to the company-level senior enlisted billet — the full troop leadership load across 130-180 Marines. The MSgt track leads to the senior infantry occupational specialist role: operations chief at higher headquarters, Monitor billet, doctrine writer, major command advisory assignment. The 0369 SSbt should have this conversation with the battalion SgtMaj before the GySgt board cycle — not to pre-decide the board outcome, but to build the deliberate career plan that positions the FitRep profile for the right track.
  • Taking a MCU/school assignment versus staying in the operational billet for the GySgt board window.
    A Marine Corps University assignment — Command and Staff, School of Advanced Warfighting, Expeditionary Warfare School — can add significant depth to the 0369 SNCO's ability to advise at the planning table. The question is timing. The SSbt who takes a MCU assignment before the GySgt board and returns with a completed resident PME program and a strong FitRep from the school is competitive. The one who takes the assignment after the GySgt board uses it as a senior SNCO development investment that broadens the assignment slate for the MGySgt/SgtMaj tier. What the MCU assignment does not do is substitute for the operational FitRep profile that the board is actually reading. PME complements the operational record; it does not replace it.
  • Joint duty or inter-agency assignment versus staying in the Marine Corps operational community.
    Joint duty at JFCOM, SOCOM, or an inter-agency assignment adds breadth that the pure-infantry career sometimes lacks — joint planning processes, joint targeting, joint logistics, and the interagency coordination that real-world operations require. The 0369 SSbt who takes a joint duty assignment and returns with a Joint Duty Assignment List credit and a documented contribution to joint operational planning has a FitRep profile that distinguishes them at the senior selection boards. The risk is losing the operational continuity that keeps the 0369 advisory function current — the SSbt who spends three years at a joint command and returns to an infantry battalion operations section will spend the first six months re-building the tactical picture the billet requires. Plan for it.
  • Drill instructor or recruiter duty versus remaining in an operational or advisory billet.
    DI and recruiter duty are Marine Corps requirements, not career electives, and the 0369 SSbt who avoids them for career protection reasons is missing the force multiplier that a DI tour at MCRD Parris Island or San Diego adds to the FitRep profile — and to the actual skill set of an NCO who is supposed to advise on how junior infantry Marines are built. The MSgt/1stSgt board is not blind to the difference between an SNCO who did DI duty and one who avoided it. At the SSbt level, if the DI or recruiter screening is positive and the timing is manageable, take the tour.

How the Seat Varies by Unit Type

  • Infantry Battalion S-3 (1st MarDiv / 2nd MarDiv / 3rd MarDiv line battalion)
    The core 0369 SSbt billet. The battalion S-3 operations section at a line infantry battalion is where the designator was designed to live — the senior infantry enlisted advising the S-3 officer on the training program, the T&R evaluation, and the tactical employment problems the battalion is solving. The pace is set by the battalion's training and deployment cycle. At 1st MarDiv (Camp Pendleton) and 2nd MarDiv (Camp Lejeune) the cycle is well-established; at 3rd MarDiv (Okinawa and Hawaii) the geographic context adds joint and Indo-Pacific operational considerations that expand the advisory surface area.
  • Regimental Combat Team or Marine Regiment S-3
    A step up in scope — the 0369 SSbt at the regimental level is advising the regimental S-3 on the infantry training program across multiple subordinate battalions rather than within a single battalion. The coordination surface is larger, the regimental review of battalion training plans is the 0369 SSbt's product, and the direct advisory relationship with line company GySgts is more distant — mediated through the battalion operations section rather than direct. The billet requires more planning and synchronization skill and less direct tactical advisory immediacy than the battalion S-3 role.
  • MAGTF Training Command or MCAGCC Twentynine Palms
    The 0369 SSbt assigned to MAGTF Training Command or the Integrated Training Exercise cell at Twentynine Palms is advising at the exercise design and evaluation level — not for a single battalion but for the MEU or RCT rotations that come through for ITX. The advisory function here is evaluative rather than organic: the SSbt assesses the training plans of battalions the SSbt does not own, runs the training event execution from the evaluator seat, and produces the after-action assessments that go back to the rotating unit's commanding officer. More travel, more evaluative precision required, less direct formation relationship.
  • Marine Special Operations Command (MARSOC) or SOTG support billet
    The 0369 SSbt at a MARSOC support or SOTG billet is in a fundamentally different environment — smaller teams, higher individual qualification expectations, and a planning culture that assumes the SNCO has completed SERE-C and at minimum a combat diver or jump pipeline. The 0369 advisory function in the SOF environment is more technically specialized and less institutional than the line infantry battalion role. The SSbt who arrives at a MARSOC billet without the prerequisite qualifications and SOF-environment cultural orientation will spend the first year catching up; plan the pipeline before requesting the billet.

What Good Looks Like at This Rank

The SSbt 0369 who is doing this correctly is known in the battalion for one thing above all others: when they hand back a training plan critique, the company gunny's first reaction is not defensiveness — it is recognition. The critique names the specific NAVMC 3500.44 gap, explains what the evaluation inspector will find when they arrive, and includes a workable fix. The company that acts on the critique arrives at MCCRE having already fixed the thing the SSbt identified. The company that ignores it arrives at MCCRE and the inspector finds it. After that happens once, all the companies start acting on the critique. Outside the training plan review function, the good SSbt 0369 is recognizable by the quality of the Section A FitReps they produce. The Sgts in the section whose FitReps have specific, verifiable advisory outcomes in Section A — not 'supported the S-3' but 'designed and executed the battalion's pre-MCCRE T&R gap analysis, identifying three critical task deficiencies across the rifle companies and driving the remedial training cycle that closed all three before the MEF inspection' — are the Sgts whose FitRep packages compete at the SSbt board. That precision in FitRep language is a learned skill, and the 0369 SSbt who teaches it to the Sgts they rate is building the battalion's advisory capacity in the next generation. The Career Course packet is in. The M4 qualification is current. The PFT score is 1st Class. The 1stSgt conversation with the battalion SgtMaj — which track, which timeline, which billet — has already happened, not because the board is imminent but because the SSbt who chooses deliberately is the one who competes deliberately.

Preview — The Next Rank

GySgt in 0369 is where the billet scope expands and the advisory credibility requirement goes up simultaneously. At SSbt you were the senior infantry enlisted in a battalion operations section. At GySgt you are the senior infantry enlisted in the battalion or the regimental operations element — which means the battalion SgtMaj is your direct accountability chain for the quality of the infantry training advisory work, not a bystander to it. The FitReps you write are on SSgts now, which means the relative-value ranking you assign has a direct impact on their MSgt/1stSgt board outcomes. You are no longer the junior voice in the planning room; you are the GySgt whose tactical judgment the S-3 officer assumes is current and credible until proven otherwise. The 1stSgt versus MSgt conversation that was theoretical at SSbt is real at GySgt. The 0369 GySgt who arrives at the E-8 board without a deliberate track decision — who has not briefed the battalion SgtMaj on which direction the career is aimed and why — is the one who gets slotted by the monitor rather than mentored into the right seat. Start the conversation early. The MSgt/1stSgt board reads the FitRep profile and the billet history, and the GySgt who has been building the profile for the 1stSgt track without saying so explicitly has not made their intentions as visible as they think.
FAQ

0369 E6 — Frequently Asked Questions

Q01What does a E6 0369 (Infantry Unit Leader) actually do?
The 0369 Infantry Unit Leader MOS is alive at SSgt.
Q02What's the most important thing to know as a E6 0369?
The 0369 designator at SSgt is not a reward for surviving the infantry — it is a selection for a specific advisory function that requires you to know the infantry cold and then speak about it in a planning room.
Q03What does a typical day look like for a E6 0369?
Time-blocked day at the E6 0369 rank tier: 0530-0630 PT — battalion formation or independent run. The 0369 SSbt in an operations billet does not have a platoon to run with; battalion PT formation or the S-3 section PT schedule. 1st-Class PFT pace is the personal floor, not the aspirational target. Physical standard is visible when the line company SNCOs are watching, 0630-0715 Hygiene, uniform, transit to the battalion COC or the regimental S-3 building depending on the current billet location, 0715-0800 Morning brief prep: review the battalion training schedule for the day,…
Q04What mistakes get E6 0369 soldiers fired or relieved?
Conduct incident — DUI, domestic violence, financial misconduct, or any Article 92/134 violation — at the SSbt SNCO tier in a small MOS is career-terminal. The 0369 community is small enough that conduct issues are visible to the community's leadership structure, and the FitRep narrative cannot recover what a page-11 entry documents permanently;…
Q05What career decisions matter most at the E6 0369 rank tier?
1stSgt track versus MSgt track: which path is the right one for this career? — At SSbt in the 0369 MOS, this decision is not immediate but it is not distant either. The GySgt board is the next gate, and the GySgt who has not made the 1stSgt versus MSgt decision explicitly before arriving at the MSgt/1stSgt board is the one who gets slotted into the track that has the open billet rather than the track that fits the skill set.…
Q06What's next after E6 for a 0369 (Infantry Unit Leader) in the Marines?
GySgt in 0369 is where the billet scope expands and the advisory credibility requirement goes up simultaneously.
Q07What manuals and regulations does a E6 0369 need to know cold?
MCRP 3-10A.3 — Marine Rifle Squad and MCRP 3-10A.4 — Marine Rifle Platoon: the ground-level doctrinal authorities your advisory function rests on.; MCRP 3-10A.5 / MCRP 3-10A.6 — Marine Rifle Company: the company-level operational framework you are advising at and reviewing training plans against.; NAVMC 3500.44 — Infantry T&R Manual: the training standard source document you use to review and critique battalion and company T&R programs.

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