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0369E4

Infantry Unit Leader

E-4 (Specialist/Corporal) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

0369 is still not a Cpl-level MOS in any normal career path. If you are a Cpl in the 03xx field and this entry pulled up, the real content for your rank is in 0311, 0331, 0341, 0351, or 0352 — whichever is your functioning primary MOS. The 0369 story starts at SSgt. That said, everything you do as a Cpl fire team leader is the foundation the 0369 SNCO stands on years from now.

The Honest MOS Read
Cpl in the Marine infantry 03xx field is a real and consequential rank. Fire team leader, three Marines under you, the first NCO slot in the squad, the person the squad leader trusts with the pointman and the first breach — that is the actual job at E-4 in the infantry. What the Cpl does not hold, in any normal career path, is the 0369 Infantry Unit Leader MOS as a primary or functioning occupational specialty. The 0369 MOS is a lateral-move and reclassification designator governed by MCO 1300.8, and its prerequisites include demonstrated senior NCO performance, completed PME at the Career Course level, a competitive FitRep record, and a battalion or regimental command endorsement. None of that is achievable at the Cpl tier by definition — the FitRep system at Marine Corps doesn't produce the record the 0369 reclassification requires until the SSgt level. A Cpl who carries 0369 in their MOS record is in an administrative or transitional situation — an edge case in the Marine Corps personnel system, not a career path. If that describes you, talk to your career planner and your company clerk to understand what the record shows and why. Do not plan a career around a MOS designator that is an administrative artifact. The honest content at Cpl for a Marine who will eventually hold 0369: this is the fire team leader tier. You run the PCC/PCI for your three Marines, you brief the squad scheme in the terrain model session with the squad leader, you write pro/con marks on your Marines for the first time, and you start building the NCO leadership credibility that the senior infantry leader reclassification requires. The Cpl tour is not where the 0369 designation is earned — it is where the foundation is laid or it is not. The SSgt board that evaluates a future 0369 reclassification package will read the Cpl FitRep section, and a weak Cpl tour is a weak foundation regardless of what came after it. The Corporals Course completion, the cutting score for Sgt, and the first FitRep relative-value placement in the company are the career mechanics that matter right now. The Sgt board is the next gate. The 0369 entry that is actually relevant to your career is the e6 entry — go read it to understand where this MOS takes a Marine who builds the right foundation.
Career Arc
  • 01Cpl pin-on via composite score cutting-score system under MCO P1400.32D — this is the active career gate, not 0369 reclassification.
  • 02Fire team leader assumption — three Marines, one fire team, the pointman slot, the breach team assignment, the first pro/con mark you write.
  • 03Corporals Course PME completion — required for Sgt promotion eligibility in most cases; verify against current MCO/MARADMIN.
  • 04Composite score tracking for the Sgt cutting score — rifle qual, PFT/CFT scores, pro/con average, education credits, drill score.
  • 05First FitRep received as Cpl — the Sgt who writes your Section A input and the platoon commander who writes your attribute marks are beginning the FitRep record the SSgt board reads in ten years.
  • 06Lateral move pipeline assessment (Recon, MARSOC A&S screening, DI duty) opens at Sgt; understand the windows before Cpl EAS.
  • 07The 0369 MOS content that applies to your career starts at e6 — read that entry now to understand what you are building toward.
Common Screwups
  • ×NJP or DUI at the Cpl tier — the first sergeant knows your name now, the company gunny pulls your record, and the FitRep narrative is damaged before the first real leadership cycle.
  • ×Corporals Course missed or deferred without cause. The PME gate is not optional; the Sgt board reads PME completion, and the Marine who arrives at the Sgt cutting score without Corporals Course completed is the Marine whose record reads as someone who did not take the career seriously.
  • ×Weak pro/con marks on your Marines because you did not understand the marking system. Pro/Con marks feed the composite score of every Marine in your fire team; a Cpl who gives average marks because they are uncomfortable with the system is hurting the Marines they are supposed to be developing.
  • ×Going around the squad leader or platoon sergeant to the company gunny on a fire team internal problem. The chain runs through the squad leader for a reason. The Cpl who bypasses it is the Cpl the platoon sergeant stops trusting within the quarter.
  • ×Letting physical standards slide after pin-on. The Cpl who was 1st-Class before getting the chevrons and is at 2nd-Class six months later is the visible signal the company gunny reads as a Marine who needed the promotion to motivate them, not a Marine who earned it.

A Day in the Life

  • 0500Wake. Check the squad group chat. PFC in your fire team had a liberty incident over the weekend? You know before PT formation. Nothing? Good. PT uniform on.
  • 0530PT formation. You take accountability for your fire team (you + three Marines), report to the squad leader (Sgt). Missing Marine is your problem first.
  • 0545-0700Unit PT — run days, strength days, MCMAP mat days rotating through the week. You set the fire team's pace. The squad leader watches whether your fire team holds pace and effort.
  • 0700-0830Hygiene, chow, change into utilities. Pre-walk the fire team's rack and locker space before first work formation. Your three Marines should not be catching what you should have caught.
  • 0830Morning formation. Squad leader gives the day's tasking. You brief your three Marines on the day's priorities of work.
  • 0900-1130Work day — collective task rehearsal at squad level, range coverage, working party, or company training event. You are running the fire team's piece of the lane, not watching it.
  • 1130-1300Chow. As a Cpl you sit with the Cpls. Your PFCs sit with the PFCs. The chow hall seating is the visible chain of command.
  • 1300-1500Afternoon work — finish the morning task or begin the next. Pro/con mark input for your Marines (monthly sit-down minimum). Composite score check for your most junior Marines. Corporals Course coursework through CDET if you are not in-residence.
  • 1500-1630Final formation. Squad leader gives the next day's plan. Sensitive items checked into the armory — your fire team count is clean before the squad leader's check.
  • 1630Liberty call on a normal schedule. Field problems and ranges break this.
  • 1700-2000Personal time. Gym, CDET coursework, family admin. The good Cpl uses this time — it does not use them.
  • 2000-2200Available. If a Marine in your fire team calls about a problem, you answer and you route. That is the fire team leader's after-hours job.

Weekly Cadence

The Cpl Mon-Fri rhythm runs on the squad training schedule and the fire team's read of where it needs work. Monday is the heaviest admin day: pro/con mark updates, any counseling from over the weekend, composite score check, gear accountability from liberty. The good Cpl front-loads Monday with every administrative task that the squad leader would otherwise have to chase. Tuesday through Thursday is the collective task rhythm. Squad-level rehearsals — squad attack, squad defense, urban operations, patrol base operations — where you run your fire team's piece of the lane and the squad leader runs the integration. MCMAP mat day one morning a week. TCCC sustainment drills with the platoon corpsman. The squad leader's MCCRE preparation pushes down to fire team rehearsal windows; the fire team leader who builds the additional practice time on Wednesday evenings without being scheduled is the fire team leader whose three Marines are ready before the lane drops. Friday is gear accountability and PME. The sensitive items count before liberty call, the CDET coursework or campus class through Tuition Assistance if you are enrolled, and the pro/con marks due before the weekend. Field rotations — ITX at Twentynine Palms, UDP Okinawa, MEU PTP workup — collapse the garrison rhythm entirely into range coverage, field training, and sleep when the squad leader rotates you out.

Key Skills — How to Drill Each

  1. 01
    Run a PCC/PCI for your fire team before the squad leader asks — every serialized item verified, every piece of mission-critical gear on the manifest, every Marine's load inspected and closed before the squad-leader walk-through.
    Build the PCC/PCI process as a drill, not an event. The pre-combat check is the fire team leader's signature on the tactical competence of his Marines. Walk each Marine's gear the night before the mission, not the morning of. The squad leader who walks through your fire team's gear and finds nothing is the squad leader who gives your team the harder task next time. The fire team leader who waits for the squad leader to find the gap is the fire team leader who loses the independent tasking.
  2. 02
    Brief the fire team's portion of the squad scheme — terrain model, movement to contact from the line of departure through the assault position, actions on the objective, casualty plan — without the squad leader rewriting it.
    Use the SMEAC format for every patrol brief, regardless of how small the mission seems. Write the terrain model from memory after the squad leader's brief before you touch a terrain model board. Know your control measures, your support-by-fire position, your assault position, and your casualty collection point before you brief your three Marines. The fire team leader who briefs clean and then executes what he briefed is the fire team leader the squad leader submits a Section A input for. That Section A input is the building block of the FitRep record.
  3. 03
    Write pro/con marks on your three Marines under the current Marine Corps marking system — observed behavior, honest scores, no inflation that cannot be defended if the company gunny asks.
    Pro/Con marks feed the composite score that determines whether your Marines pin Cpl on time or sit in zone for an extra cycle. Inflated marks feel kind but produce uncompetitive Cpls who are surprised when the cutting score is higher than their composite. Write the mark you would defend to the company gunny: what did this Marine actually demonstrate this month? The fire team leader who writes honest marks and can explain them to the squad leader is the fire team leader the squad leader trusts to write FitRep Section A inputs as a Sgt.
  4. 04
    Mentor your most junior Marine through a financial or personal problem without making it the squad leader's problem first — routing to Command Financial Specialist, base legal, or the chaplain as appropriate.
    Every Marine in your fire team is a financial risk in the first year. Predatory lenders, car dealers near the base, gambling in the barracks — the Command Financial Specialist at the unit can stop a garnishment and set up a debt management plan. Base legal does free consultations. The chaplain is confidential and 24-hour. You are not solving the Marine's problem — you are routing him to the office that can. Keep the CFS's number and the legal office building number on your phone. The fire team leader who routes problems cleanly is the fire team leader the squad leader does not have to escalate around.
  5. 05
    Build the composite score toward the Sgt cutting score through every available input — rifle qualification, PFT/CFT, college credits through Tuition Assistance, CDET PME credits, Corporals Course.
    Pull the current 0311 (or source MOS) Sgt cutting score from the current MARADMIN or TFRS before you sit with the platoon sergeant about your composite. Know where you are, know where the cut sits, and know what you can do this quarter to close the gap. College credits through Tuition Assistance cost nothing while on active duty and add to the composite. MCU Online and CDET courses add PME credit. Every Expert rifle qualification adds. Every MCMAP belt level adds. The Cpl who knows their composite score to the point and can name the three inputs they are currently working is the Cpl the platoon sergeant helps.

Manuals & References — What Chapters Matter

  • MCRP 3-10A.3 — Marine Rifle Squad
    The doctrinal authority the squad leader and platoon sergeant quote in the scheme back-brief. At Cpl, your job is to know the fire team's portion of this manual — the fire team in the offense, the fire team in the defense, the fire team's role in the squad's tactical control measures — so you can brief it without reading from the page.
  • NAVMC 3500.44 — Infantry T&R Manual (Cpl-level individual and team tasks)
    The T&R Manual defines every task your fire team is evaluated against at the MCCRE and pre-deployment evaluation. At Cpl, you are signing off on 1000-level individual tasks for your Marines and you are being evaluated on the 1500/2000-level collective tasks as a fire team. Print the fire team collective task section and walk it with the squad leader during your first 30 days as a fire team leader.
  • MCO 1610.7 — Performance Evaluation System
    You receive FitReps now and you influence them by writing pro/con mark input for your squad leader's Section A. Understanding the FitRep system — attribute marks, relative value, the narrative input that feeds the promotion board — before you need to navigate it is the Cpl-tier preparation that pays off at Sgt.
  • MCO P1400.32D — Marine Corps Promotion Manual
    The composite score, cutting score, and Cpl-to-Sgt promotion mechanics. Know how the score is built, what inputs you control, and where the current cutting score sits. The Cpl who does not understand how they get promoted is the Cpl who is surprised when they sit in zone.
  • MCO 1300.8 — Marine Corps Lateral Move and Reclassification Policy
    This is the governing document for the eventual 0369 designator you are reading this page for. Understand its prerequisites — they describe what you are building toward across the next decade.

Standards — How to Hit Each

  • Corporals Course completed; Sgt composite score above current cutting score.
    Corporals Course is the PME gate for Sgt promotion. Pull the in-residence slot through the platoon sergeant rather than taking the distance education option if the family and operational calendar allow — the network of Cpls you meet from across the Corps during an in-residence Corporals Course is part of the value. Distance education through CDET is the option when operational tempo makes in-residence impossible. Either way, close the gate before the Sgt cutting score is within reach.
  • 1st-Class PFT and CFT; Expert rifle qualification; Green Belt MCMAP minimum.
    These are the non-negotiable physical and technical standards at Cpl. 1st-Class PFT and CFT mean you are above the company average physically; Expert rifle qualification means you are holding the standard you will be advising against as a senior NCO; Green Belt MCMAP means you have invested in the combatives program above the minimum. Build all three before the Sgt board cycle — they compound in the composite.
  • Fire team collective task currency in NAVMC 3500.44 at the unit's MCCRE evaluation standard.
    The MCCRE evaluation grades the fire team against the T&R Manual's collective task list. Walk the task list with the squad leader 90 days before any external evaluation. Identify the tasks your fire team has not rehearsed recently and build those into the squad training plan. The fire team leader who arrives at the MCCRE with a gap in the fire team's task currency is the fire team leader the squad leader has to explain to the platoon sergeant.

Technical Mistakes — Concrete Consequences

  • Verbal fire team counseling with no written record — no page-11 entry, no pro/con mark notation, nothing documented.
    When the counseling is not in writing, it did not happen in any administrative sense. If a Marine in your fire team appeals a pro/con mark, files a complaint, or pushes back on a course of action recommendation, the chain's first move is to pull the written record. A verbal counseling you gave and remember clearly is invisible in the file. Five minutes typing a page-11 entry is a year of protection.
  • Sensitive items count discrepancy at the platoon sergeant's Monday morning inspection because you did not pre-walk the count on Sunday.
    The squad leader's read on the new fire team leader is set in the first 30-60 days. A fire team that fails a sensitive items inspection without a pre-walk by the Cpl gets labeled — and the label follows the fire team leader through the workup. Pre-walk Sunday afternoon.
  • Letting the fire team's MCCRE collective task rehearsal slide because the squad leader is not scheduling deliberate practice time.
    The fire team leader who waits for the squad leader to schedule the training that the fire team needs is the fire team leader who arrives at the MCCRE with a gap in collective task currency. Build the practice time into the fire team's PT and training windows without being asked. The squad leader sees the fire team that is ready before the lane drops.
  • Underestimating the window for Recon, MARSOC A&S, and B-billet decisions at Cpl and Sgt.
    The lateral move pipelines for Recon (BRC at Coronado, ~9 weeks) and MARSOC (A&S at Camp Lejeune) have age and rank windows that narrow progressively. A Cpl who has not run the screening fitness preparation and put in the research by mid-Cpl is a Sgt who arrives at the window unprepared. The window does not wait.

Career Decisions at This Rank

  • First reenlistment — 03xx infantry track versus EAS
    The first reenlistment at Cpl is the real commitment decision. The four-year service obligation that followed boot camp and ITB is ending; the question is whether the life makes sense for another cycle. The honest test: are you better than you were two years ago? Are the Marines in your fire team better because of you? Is the physical and operational life something you can sustain and build on? Marines who reenlist because they do not know what else to do and are not genuinely investing in the career will not produce the FitRep record that makes a senior reclassification competitive years later. The SRB bonus amounts for 0311 Cpls are published in current MARADMIN messages and vary year over year — pull the current MARADMIN and run the math with the career planner before the conversation with the company gunny.
  • Lateral pipeline at Cpl/Sgt — Recon BRC, MARSOC A&S, B-billet (DI, MSG, Recruiter)
    The lateral move pipeline windows are age and rank constrained. Recon (BRC at Coronado, ~9 weeks for 0321 Recon Man MOS) and MARSOC (A&S at Camp Lejeune, ~7-9 month total pipeline for 0372 Critical Skills Operator) open at Cpl and Sgt with increasing selectivity. B-billets — Drill Instructor duty at MCRD Parris Island or San Diego (~3 years), Marine Security Guard at Quantico, Recruiter School in San Diego (~6 weeks leading to an 8411 Recruiter tour) — open at Sgt and above but begin with research now. Each pipeline is career-shaping and the decision should be deliberate. Talk to Marines who have done the tour.
  • MECEP or ECP commissioning — Cpl and Sgt windows
    The Marine Enlisted Commissioning Education Program (MECEP) and the Enlisted Commissioning Program (ECP) both have Cpl-eligible windows depending on college credit accumulation and degree completion. MECEP keeps you on active-duty pay while completing the bachelor's degree at a participating university; ECP is the direct commission path for Marines who already hold a bachelor's. The honest test at Cpl: are you better at executing missions or at building systems and writing policy? Marines who want to run squads and platoons for a career make average platoon commanders. Marines who keep asking why the unit does something the way it does tend to make better officers. Talk to the company commander.

How the Seat Varies by Unit Type

  • Standard infantry battalion (1st/2d/3d MarDiv)
    The default Cpl assignment — fire team leader in a rifle platoon's rifle company. The rhythm is MEU PTP workup, MEU deployment afloat, reset, with ITX rotations to Twentynine Palms, MWTC Bridgeport, and JWTC Okinawa. The platoon sergeant is a SSgt, the company gunny is a GySgt, and the SgtMaj of the battalion knows the fire team leaders who stand out by reputation within 90 days.
  • MEU BLT afloat
    Fire team leader on the Battalion Landing Team embarked on amphibious shipping (LHD/LPD/LSD). The rhythm is MEU-SOC mission profiles — TRAP, NEO, VBSS, raid operations — and the daily training on the limited shipboard space. Port visits, contingency posture days, and the persistent integration with the Navy ARG. The MEU is the formative operational experience for the junior infantry NCO.
  • UDP Okinawa rotation (Camp Schwab, Camp Hansen)
    Unaccompanied tour under III MEF, typically 6 months. Jungle Warfare Training Center, partnership training with allied forces (Korean Marines, Japanese GSDF, Philippine Marines, Australian Defence Force), and Indo-Pacific contingency posture. Different operational texture than the MEU afloat; both are valuable.

What Good Looks Like at This Rank

The good Cpl in the 03xx field — the one who will eventually hold 0369 a decade from now — is the fire team leader who never makes the squad leader wonder whether the fire team is ready. The gear is pre-walked, the pro/con marks are in on time, and the three Marines in the fire team have a Corporals Course timeline that the Cpl can brief from memory. The observable signals are specific: the fire team's MCCRE collective task rehearsal happens on Wednesday evenings in the company parking lot without the squad leader scheduling it. The youngest Marine in the fire team has a composite score conversation with the Cpl at least once a quarter. When a Marine in the fire team has a financial or legal problem at 2200 on a Thursday, the Cpl is on the phone routing him to the right office before it becomes a page-11 entry for the Marine and an accountability conversation for the squad leader. The SSgt board that will eventually read this Marine's record in eight or ten years is reading back to the Cpl FitRep section. What the reporting senior wrote about the Cpl fire team leader — the relative-value placement in the company, the observable behavior narrative — is the foundation the senior NCO's competitive package is built on. The good Cpl knows this and acts accordingly. Not because they are calculating, but because they understand that this is the job.

Preview — The Next Rank

The next level from Cpl is Sgt — squad leader in the source 03xx MOS. Not 0369 Sgt, because the MOS does not function as a primary Sgt designator in any normal career path. The content for that tier is in the e5 entry for this MOS page, which gives the honest framing for what that transition means, and in the e5 entry for your source MOS (0311, 0331, etc.), which has the actual daily schedule, weekly cadence, and leadership content. The Sgt tier is the squad leader seat — 12-13 Marines, three fire teams, the load-bearing leadership position between the platoon sergeant and the junior enlisted body of the company. The promotion from Cpl to Sgt in the 03xx field runs through the cutting score under MCO P1400.32D; the gate is the composite score versus the current MARADMIN cutting score for your source MOS. Build the composite now. The 0369 page that is actually relevant to your career continues at e6. The SSgt entry describes what the MOS means in practice, the GySgt entry describes what senior infantry advisory expertise looks like, and the e8-e9 entry describes the senior leadership pinnacle. Read them to understand the arc you are building toward — then go back to the source MOS page and build the Sgt career that makes that arc possible.
FAQ

0369 E4 — Frequently Asked Questions

Q01What does a E4 0369 (Infantry Unit Leader) actually do?
The 0369 MOS is not assigned to Corporals as a starting or primary MOS through normal Marine Corps accession or career management.
Q02What's the most important thing to know as a E4 0369?
0369 is still not a Cpl-level MOS in any normal career path.
Q03What does a typical day look like for a E4 0369?
Time-blocked day at the E4 0369 rank tier: 0500 Wake. Check the squad group chat. PFC in your fire team had a liberty incident over the weekend? You know before PT formation. Nothing? Good. PT uniform on, 0530 PT formation. You take accountability for your fire team (you + three Marines), report to the squad leader (Sgt). Missing Marine is your problem first, 0545-0700 Unit PT — run days, strength days, MCMAP mat days rotating through the week. You set the fire team's pace. The squad leader watches whether your fire team holds pace and effort, 0700-0830 Hygiene, chow, change into utilities.…
Q04What mistakes get E4 0369 soldiers fired or relieved?
NJP or DUI at the Cpl tier — the first sergeant knows your name now, the company gunny pulls your record, and the FitRep narrative is damaged before the first real leadership cycle; Corporals Course missed or deferred without cause. The PME gate is not optional; the Sgt board reads PME completion, and the Marine who arrives at the Sgt cutting score without Corporals Course completed is the Marine whose record reads as someone who did not take the career seriously;…
Q05What career decisions matter most at the E4 0369 rank tier?
First reenlistment — 03xx infantry track versus EAS — The first reenlistment at Cpl is the real commitment decision. The four-year service obligation that followed boot camp and ITB is ending; the question is whether the life makes sense for another cycle. The honest test: are you better than you were two years ago? Are the Marines in your fire team better because of you? Is the physical and operational life something you can sustain and build on? Marines who reenlist because they do not know what else to do and are not genuinely investing in the career will not produce the FitRep record that…
Q06What's next after E4 for a 0369 (Infantry Unit Leader) in the Marines?
The next level from Cpl is Sgt — squad leader in the source 03xx MOS.
Q07What manuals and regulations does a E4 0369 need to know cold?
MCRP 3-10A.3 — Marine Rifle Squad: the doctrinal authority for the fire team leader billet the 0311 Cpl is executing before any reclassification is relevant.; MCO 1300.8 — lateral move and reclassification policy: the document that will eventually govern the move into 0369.; NAVMC 3500.44 — Infantry T&R Manual: Cpl-level collective tasks in the source 03xx MOS.

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