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0811E5

Field Artillery Cannoneer

E-5 (Sergeant) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

The gun section is yours. Not the crew — the section. Six to eight Marines, one M777A2, every round fired from that gun, and every FitRep written on every Cpl under you. The battery gunny is watching your section's MCCRE rating, your section chief record, and the FitRep narratives you are building on your Cpls. The SSgt selection board reads all three.

The Honest MOS Read
Sergeant in the 0811 community is the section chief rank. The field artillery section's tactical effectiveness flows directly through the section chief — the gun that fires accurately under a time-on-target constraint, in a complex fire support coordination measure environment, after a displacement in the dark, is accurate because the section chief prepared the crew, verified the data, and called 'READY' on a round he had actually inspected. The battery gunny evaluates section chiefs. The FDC evaluates section chiefs. The MAGTFTC evaluator at Twentynine Palms is evaluating section chiefs. You are the proximate cause of everything the section does. The section chief's administrative load at Sgt is the piece the school did not prepare you for. You write FitReps under MCO 1610.7 on your Cpls — not pro/con marks, actual FitReps with Section A narrative, attribute evaluations, and relative value placement. The FitRep is an annual document that the reporting senior (your platoon commander or battery XO) builds on top of your Section A input, and the reviewing officer (your battery commander or battalion CO) reads against every other Sgt's FitRep in the regiment. A Section A that describes observed behavior in action-result-impact language with specific outcomes is the Section A the reporting senior signs without revision. A Section A that reads like a recommendation letter — 'outstanding Marine, best in the battery' — is the Section A the reporting senior rewrites, and the Sgt whose section A keeps getting rewritten is the Sgt whose relationship with the platoon commander deteriorates by quarter three. Ammunition accountability and lot segregation is the section chief's administrative fingerprint on the gun line. Each fire mission draws from a specific propellant lot, projectile lot, fuze lot, and primer lot. The FDC's muzzle velocity corrections and range data are computed against the lots in use. A lot substitution — running round from a different lot than what the FDC has on record — introduces a range or deflection error the FDC cannot see. The section chief who manages lot segregation as a personal standard, who walks the ammunition point before occupation and verifies the lot numbers against the FDC's fire mission data, is the section chief the FDC calls first when a complex mission is in the queue. The section chief who eyeballs the lot segregation is the section chief whose section generates the unexplained range error in the FIREX debrief. The Sergeants Course PME slot is the administrative gate to SSgt. Sergeants Course is delivered at the regional Marine Corps NCO academies in-residence, or through CDET for non-resident. In-residence is the standard and the preferred outcome; CDET is the MEU deployment fallback. The SSgt selection board reads PME completion, and the Sgt who is Sergeants Course-complete before the SSgt board window is the Sgt who is competitive. Schedule the in-residence slot through the battery gunny 90 days out from the next course drop; if the slot conflicts with the MEU manifest, work the conflict through the battery gunny — do not let the MEU workup eat the PME slot without a documented plan to recover it. The fire direction center is a part of your job you will not have expected. Sgt section chiefs get called to FDC briefings — fire mission critiques, registration reviews, ammunition resupply coordination, check-fire debrief. The section chief who speaks FDC is the section chief who gets called to the complex missions; the one who defers everything to the FDC chief is the one who runs the less complex fire plan. MCWP 3-16.1 and FM 3-09 are the gunnery references the FDC chief quotes; owning them is not optional at Sgt. The Cpls under you are your bench. Each of them is on a composite score build, a section-chief candidate qualification track, and a Corporals Course timeline. Monthly counseling — what the mark is, why, and what the specific improvement path is — is the baseline. The section chief who identifies a Cpl's composite score gap 90 days before the cutting score window and routes him to the right school slot, the right MCMAP tape test, and the right rifle qualification block is the section chief who pins three Cpls to Sgt during his section chief tour. The SgtMaj of the regiment knows which section chiefs develop their Cpls. The MCCRE evaluation is the section chief's report card. The MAGTFTC evaluators at Twentynine Palms grade the section against NAVMC 3500.55 collective task standards. The section that occupies, registers, and fires cleanly — no misfire procedure triggered, no lot segregation error, no fuze setting incident — is the section the battery gunny puts in the hardest fire plan lane on the FIREX schedule. The section that takes corrective action well after a thumping MCCRE AAR is the section the OC/T evaluator notes in the debrief as the benchmark for unit recovery. The section that neither performs cleanly nor recovers well is the section whose section chief's FitRep narrative the reporting senior rewrites.
Career Arc
  • 01Sgt pin-on via cutting score under MCO 1400.32 — section chief billet assumption in the artillery battery.
  • 02Section chief qualification confirmation — battery commander or designee formal evaluation, NAVMC 3500.55 collective tasks signed off.
  • 03First MCCRE / CAX evaluation rotation as section chief — MAGTFTC evaluators, Twentynine Palms or Lejeune evaluation.
  • 04Sergeants Course PME completion — in-residence at the regional NCO academy; schedule 90 days before the slot drops.
  • 05MEU PTP workup as section chief — full MEU-SOC evaluation package, section chief on the BLT manifest.
  • 06FitRep cycle completion — Section A narrative on each Cpl written, reporting senior endorsement, reviewing officer review.
  • 07SSgt selection board window — centralized SNCO selection board reads FitRep relative value, composite score, PME, conduct.
Common Screwups
  • ×Missing Sergeants Course PME through schedule conflict and not recovering the slot. The SSgt board reads PME completion; a Sgt who is not Sergeants Course-complete when the board meets is visibly disadvantaged in the relative value comparison regardless of FitRep quality.
  • ×NJP, DUI, or fraternization at Sgt. At this rank, UCMJ action forecloses the SSgt selection board, removes the section chief billet, and in most cases results in administrative separation under MARCORSEPMAN. The section you built is someone else's problem.
  • ×FitRep inflation — Section A that says 'outstanding' without observed-behavior support. The reporting senior who rewrites your Section A twice will not write you the 'must select' narrative at the SSgt board cycle. The section chief whose FitRep narratives are consistently rewritten by the platoon commander is the section chief who does not make SSgt on the first board.
  • ×Hiding a safety incident — misfire handling error, lot segregation violation, fuze setting incident — from the battery gunny. The FDC chief's debrief notes are read by the battery commander. A section chief who reports an incident honestly and presents the corrective action earns a different outcome than the one who buries it and gets caught.
  • ×Phone check on liberty — posting OPSEC-relevant material from a fire mission, an exercise, or a MEU deployment. At Sgt, the OPSEC violation is not just a personal NJP risk; it is a section-level operational security breach that the battery commander and the battalion CO brief at the post-exercise debrief. The section chief's name is in that brief.

A Day in the Life

  • 0500Wake. Phone check for the section group chat — any overnight incidents among your Marines. Send the section's next-day priority brief if you did not send it at 1700 last night. PT uniform, head to the battery.
  • 0530PT formation. You take section accountability and report to the platoon sergeant. The section chief who is the last NCO into formation is the section chief the platoon sergeant notes. Report accountability clean; any missing Marine is your problem before it becomes the platoon sergeant's.
  • 0545–0700Unit PT. The section sets the pace in its rank; you run at the front of your section. Wednesdays is often the platoon hump; Thursday may be the section-led PT block where you built the plan. The platoon sergeant watches whether your section holds pace, ruck weight, and formation.
  • 0700–0830Hygiene, chow, utilities. Pre-walk the gun before morning colors — daily pre-operation check per TM 9-1025-215-10. Walk the section's ammunition point if a fire mission or range event is scheduled for the day. Any discrepancy is in the section log and in the battery gunny's ears before colors.
  • 0830Morning formation. The platoon sergeant gives the day's plan to the section chiefs. You brief your Cpls on the section's tasks for the day; the Cpls brief their cannoneers. Your section should not be asking the platoon sergeant questions that belong to you.
  • 0900–1130Primary work event — section occupation drill, registration rehearsal, fire mission crew drill, MCCRE prep lane, ammunition point accountability, motor-T maintenance on the prime mover. As section chief, you are running the section's event, not participating in it. After-action review at 1100 with the Cpls — what the section did, what was wrong, what changes before the next iteration.
  • 1130–1300Chow. Section chiefs eat with the NCO group. The battery gunny and the platoon sergeants are at the adjacent table. The conversations at chow are not informal — the battery gunny is noting which section chiefs are talking shop with the other NCOs and which ones are on their phones.
  • 1300–1500Afternoon work — continuation of the morning event, maintenance, FitRep Section A drafts for the Cpls whose cycle is due this quarter, monthly counseling sessions with each Cpl (pro/con marks, composite score gap review, section-chief candidate qualification status). PME study time for Sergeants Course if you are enrolled in the distance education pre-course.
  • 1500–1630Final formation. Platoon sergeant gives next day's plan. Sensitive items — aiming circle, gun serial, radios — checked in. You run the section count; the Cpls run the crew counts. You hand each Cpl a priority card for tomorrow with specific tasks and the standard for each.
  • 1630Liberty call if the battery is on normal schedule. You give the section the same brief on the same day every week: liberty standards, DUI consequences, call you first.
  • 1700–2000Personal time — family if you are married and off-base, personal development if you are single or in the barracks. Sergeants Course coursework, FitRep Section A drafts, composite score review, college coursework through Tuition Assistance. The section chief who uses personal time to close the gaps on his own SSgt board candidacy is the section chief who is competitive.
  • 2000–2200If a Marine in your section called with a problem — financial, marital, legal, medical, behavioral health — you are on the phone or you are driving there. The section chief who answers the call and routes the problem to the correct resource (MCCS PFMP for financial, legal assistance for legal, branch medical for health, chaplain for personal) is the section chief the battery gunny hears about the next morning for the right reason.
  • 2200Lights out. The section starts at 0500 regardless of what happened between 2000 and 2200.
  • FIREX / CAX rotation at MCAGCC Twentynine Palms or Lejeune local training areaClock breaks. Section occupation at night under blackout; spades are your first priority before the FDC sends data. Fire missions begin on the FDC's timeline. You are awake before stand-to at first light, the section's sector is your responsibility, and you sleep when the battery gunny rotates you out. The MAGTFTC evaluator at Twentynine Palms is reading every section chief in the battalion — your MCCRE lane rating is the most consequential professional evaluation between now and your next FitRep cycle.
  • MEU deployment afloat — BLT on ARG shippingSection chief on the Battalion Landing Team embarked on amphibious shipping (LHD/LPD/LSD). MEU-SOC mission training on the flight deck and in the berthing spaces. The M777A2 is broken down and stowed in the vehicle cargo hold; section maintenance runs on the ship's schedule. You are the section's senior NCO during port visits and contingency response posture days. The MEU SgtMaj is reading section chief performance during every exercise event and every liberty evolution. The section chief who runs a clean MEU deployment comes back with a FitRep narrative the reporting senior can use at the SSgt board.

Weekly Cadence

Monday is the section chief's planning day. The platoon sergeant puts out the week's plan at Friday's final formation; Monday morning is when you find out what got cut, what got added, and which event requires section-specific preparation that the platoon sergeant's tasking did not specify. Spend the first 30 minutes of the work day building the section's weekly execution plan — which Cpl runs which portion of which event, what the standard is for each task, and what the AAR criteria are at end of day. Brief the Cpls before 0930; they brief their cannoneers before 1000. The section that is still waiting for the section chief to tell them what to do at 1030 is the section the battery gunny notices. Tuesday through Thursday is the training rhythm. Section occupation and displacement rehearsal, registration drill, fire mission execution drill with check-fire and misfire procedure integration, ammunition lot segregation walkthrough — rehearsed at the section level with the Cpls running their crew-position portions and the section chief running the section-level integration. The platoon sergeant pulls sections for platoon-level events when the section has rehearsed cleanly; the battery gunny pulls platoon-level events for battery-level MCCRE prep when platoon integration is clean. The good section chief runs his section's training the way the platoon sergeant runs his platoon's — calendar-driven, T&R-aligned, AAR-honest, with the next evaluation criteria visible on the planning board 30 days out. The week's other layer is the NCO administrative cycle. FitRep Section A drafts for the Cpls whose cycle is ending this quarter run in parallel with the training calendar — draft Section A language during the Monday planning period when the week's events are visible, revise it based on what you observed by Thursday, submit it to the reporting senior before the draft deadline. Monthly pro/con marks for the section's Marines are due at the end of the month; the Friday of the last week of the month is the counseling session cycle. The section chief who completes the administrative cycle clean — FitRep inputs submitted before the deadline, monthly counseling documented, no open adverse entries — is the section chief the battery gunny can take a weekend off with confidence. Field rotations (MCAGCC Twentynine Palms, JWTC Okinawa, MEU PTP) collapse garrison time entirely. Maintenance, administrative work, and counseling cycles happen in the margins of the field schedule and the ship schedule. The section chief who falls behind on the administrative cycle during a field rotation is the section chief who is doing 60 hours of catch-up work in the two weeks after the unit returns.

Key Skills — How to Drill Each

  1. 01
    Occupy, register, and displace an M777A2 gun line position to the NAVMC 3500.55 collective standard — site selection, aiming circle registration, charge segregation, ammunition disposition — faster than the FDC changes its mind.
    The gun line occupation sequence is the section chief's executive competency. Know the site selection criteria from MCWP 3-16.1 (field of fire, defilade, soil for spade bearing, egress route for displacement) before the battery gunny asks why you selected this position. Run the occupation rehearsal dry at least once per week during the pre-deployment workup — section chief briefs the crew on the occupation plan at the terrain model, crew executes without prompts, section chief AAR's the timeline and the errors. The registration sequence — aiming circle setup, initial registration round, deflection and range adjustment — is the task the FDC evaluates you against. The section chief who registers on three rounds rather than eight is the section chief the FDC chief calls for the complex fire plan.
  2. 02
    Run a section through a fire mission with a check-fire, a misfire procedure, and a displacement under the TM 9-1025-215-10 standard without coaching from the battery gunny.
    The misfire procedure under TM 9-1025-215-10 is the section chief's non-negotiable technical standard. Memorize the immediate action and subsequent action steps for a hangfire and for a misfire — the times, the actions, the who-does-what sequence. Drill the crew through the misfire procedure dry once per month regardless of whether the section has had a misfire event. The battery gunny's check-fire test during a scheduled MCCRE lane is not the time to look up the procedure. The crew that executes a misfire drill correctly under evaluator observation while the section chief calls the check-fire to the FDC is the crew that comes back from the CAX rotation with a clean safety record.
  3. 03
    Write a clean Section A on FitReps for your Cpls — observed behavior, action-result-impact, no inflation the reporting senior cannot defend.
    The FitRep Section A is your professional writing standard at Sgt. Draft it from your monthly counseling notes — what you observed the Cpl doing, in what tactical context, with what measurable result. 'Cpl [name] led the section's aiming circle setup during the MCCRE evaluation lane at MCAGCC; section registered on four rounds in a nine-minute window against the standard of eight rounds in twelve minutes, enabling the FDC to execute the TOT mission on schedule' is a Section A sentence. 'Outstanding Marine with exceptional leadership skills' is not. Run a draft Section A through the platoon commander before the formal FitRep cycle — a reporting senior who has previewed your Section A input and flagged the language issues before the formal submission deadline is better than one who rewrites it cold on the day it is due.
  4. 04
    Conduct section-level ammunition accountability and lot segregation for the FDC — propellant lot, projectile lot, fuze lot, primer lot — verified against the FDC's fire mission data before occupation.
    The lot segregation walkthrough at the ammunition point is a 20-minute pre-occupation procedure. Pull the FDC's current propellant lot, projectile lot, fuze lot, and primer lot from the fire mission data card or the FDC chief directly. Walk the ammunition point with the Cpl and verify the physical lot markings on the ammunition containers against what the FDC has on record. Document any discrepancy before occupation — a lot substitution caught at the ammunition point is a coordination call to the FDC chief; a lot substitution caught in the FIREX debrief is a section chief counseling entry in the battery commander's possession.
  5. 05
    Mentor your Cpls into section-chief-candidate-qualified and Sergeants Course-ready Marines — cannon gunnery fundamentals, FitRep input discipline, composite score management.
    Monthly counseling with each Cpl is the baseline. Track each Cpl's composite score against the current 0811 Sgt cutting score — know where the gap is before they do. Identify the composite score variable with the most leverage and build a 90-day plan to move it (MCMAP tape test, rifle qualification block, education points through Tuition Assistance). For the Cpl who is section-chief-candidate ready, schedule the informal run-through with you watching and the formal attempt with the battery commander on the calendar before the Cpl's reenlistment window. The three Cpls who pin Sgt during your section chief tour are the three names in the battery gunny's next FitRep narrative on you.
  6. 06
    Walk a Marine through a financial, personal, or family crisis — predatory lender, marital problem, financial distress, behavioral health concern — and route it to the correct resource without it becoming the battery gunny's problem first.
    MCCS (Marine Corps Community Services) Personal Financial Management Program (PFMP) counseling is free at every installation. The Command Financial Specialist (CFS) at the unit level can stop a garnishment. Legal Assistance at the base law center reviews predatory loan contracts and writes cease-and-desist letters. The battalion chaplain runs confidential pastoral counseling. Behavioral Health at the Branch Medical Clinic handles crisis assessment and mental health referrals. Know the building numbers and the CFS's name before you need them. The section chief who routes the problem to the correct resource within 24 hours is the section chief whose battery gunny never hears about it second. The battery gunny who finds out about a Marine's financial crisis from the 1stSgt instead of from the section chief who handled it will have a direct conversation with you about your chain-of-command credibility.

Manuals & References — What Chapters Matter

  • TM 9-1025-215-10 — Operator's Manual for the M777/M777A2 155mm Howitzer
    Own this manual at section-chief depth — not just the operator maintenance chapter, but the misfire procedures chapter, the operator troubleshooting table, and the recoil mechanism maintenance procedures. The battery gunny quotes TM 9-1025-215-10 chapter and paragraph at you during maintenance inspections; the section chief who knows the manual at chapter-paragraph granularity is the section chief who handles the maintenance inspection without the battery gunny's corrections. Verify the edition against the battery's copy — TM updates occur and the section chief with an outdated edition is cited immediately.
  • MCWP 3-16.1 — Tactics, Techniques, and Procedures for Fire Support (and FM 3-09 — Cannon Gunnery)
    This is the gunnery reference the FDC chief and the fires officer quote at the mission debrief. At Sgt you are in the FDC brief and the fires coordination meeting; owning the gunnery reference means you can speak the FDC's language during the complex mission coordination rather than defaulting to 'I'll relay to my section.' The sections on registration, muzzle velocity correction, and fire support coordination measure compliance are the ones the FDC chief evaluates section chiefs against. Read FM 3-09 as the joint-doctrinal companion to MCWP 3-16.1.
  • NAVMC 3500.55 — Field Artillery Training and Readiness Manual (Sgt / section chief collective tasks)
    Print the section-chief collective task list from NAVMC 3500.55 and walk it with the battery gunny during your first 30 days as a section chief. The collective tasks at the Sgt level are the MCCRE evaluation criteria — occupation, registration, fire mission execution, displacement, misfire procedure, ammunition accountability. Know the performance steps for each task at the level of detail that allows you to coach a Cpl through the steps without referencing the manual. The MAGTFTC evaluator at Twentynine Palms is reading the same task list.
  • MCRP 3-10A.7 — Fire Support in the Combined Arms Operation
    The section chief who understands how the howitzer section fits into the maneuver element's scheme of maneuver is the section chief who anticipates the FDC's fire plan rather than reacting to it. MCRP 3-10A.7 explains the fire support coordination measures (FSCM), the attack guidance matrix, and the fire support execution matrix that the FDC uses to authorize and prioritize fire missions. A section chief who can read an FSCM and understand why a fire mission is authorized or restricted is a section chief the FDC calls before the complex mission starts.
  • MCO 1610.7 — Performance Evaluation System
    You write FitReps now. Read MCO 1610.7 cover to cover before the first FitRep cycle — the Section A narrative policy, the attribute marks rubric, the reporting senior and reviewing officer responsibilities, the relative value placement guidance. The FitRep policy has been updated across recent revisions; verify the current revision on Marines.mil before quoting chapter and verse. The section chief who understands the relative value placement mechanics writes Section A input that the reporting senior can use without revision.
  • MCO 1400.32 — Marine Corps Promotion Manual
    The Sgt-to-SSgt promotion path runs through the centralized SNCO selection board — not the composite score cutting score system used for Cpl and Sgt. Read the SNCO board mechanics chapter carefully: what the board reads, how FitRep relative value is assessed, what the PME completion requirement is, and what the composite score contributes. Pull the current MARADMIN for the 0811 SSgt board cycle before you sit with the battery gunny about your SSgt timeline. The section chief who understands the SSgt board mechanics is building his FitRep profile deliberately — not hoping the good FitReps accumulate.

Standards — How to Hit Each

  • Sergeants Course graduate — required PME gate for Sgt and baseline for SSgt board competitiveness; in-residence is the standard.
    Schedule the in-residence Sergeants Course slot through the battery gunny 90 days before the course drop date. If the MEU workup or a FIREX rotation is consuming the available window, the battery gunny's job is to find the recovery slot — but only if you are on record as needing it and tracking the calendar. The Sgt who tells the battery gunny about the schedule conflict at 30 days does not get the slot. In-residence is materially better than CDET distance education: the peer network of Sgts from across the Corps, the leadership practicum with live evaluators, and the residential curriculum that CDET cannot replicate. Schedule in-residence. Use CDET only when the deployment calendar forces it and document why.
  • Brown Belt MCMAP minimum; Black Belt is what the battery gunny notes on the FitRep and what the SSgt board reads.
    Brown Belt is the Sgt section chief standard at most artillery regiments — verify the current requirement with the unit's senior MCMAP instructor. Black Belt is the differentiator the battery gunny notes on the FitRep input that feeds the SSgt board. Build the Brown Belt timeline before Sgt pin-on; build the Black Belt timeline before the SSgt board window. The MCMAP instructor at the battery can schedule the tape test events — it requires preparation time (hours of documented sustainment training and technique demonstration) but it is within every Sgt section chief's schedule if the time is protected. The section chief who has Black Belt before the SSgt board is the section chief whose composite profile reads cleanly against peers who do not.
  • 1st-Class PFT and CFT under MCO 6100.13; your section average is watched and reported.
    At Sgt, fitness is not only personal — it is the section's standard-bearer signal. The section that sees the section chief hit 1st-Class on every test is the section whose average trends toward 1st-Class. The platoon sergeant and battery gunny see the unit health-of-the-force report; a section chief who is scoring 1st-Class while his section is scoring 2nd-Class on average is a section chief with a section fitness culture problem the battery gunny will address. Train the CFT events specifically — the ammunition can lift and the maneuver under fire sequence replicate the gun line's physical demands more directly than running alone does.
  • Section MCCRE / CAX evaluation rated at the unit standard or above — the battery commander's FitRep narrative on you depends on it, and your FitRep on your Cpls depends on theirs.
    The MCCRE evaluation at MCAGCC Twentynine Palms is the artillery equivalent of the infantry's NTC rotation. The MAGTFTC evaluators are grading the section against collective task standards from NAVMC 3500.55. Build the section's training plan 90 to 120 days before the evaluation with the platoon sergeant — occupation and displacement rehearsal, registration drill, fire mission execution drill, misfire procedure drill, ammunition lot segregation drill — and run each event dry, then blank, then live, then graded. AAR honestly after each graded event: what the section did, what the evaluator cited, what changes before the next iteration. The section that improves across three MCCRE prep iterations is the section that earns the battery gunny's confidence for the hardest fire plan lane.
  • Composite score tracked monthly; pull the current MARADMIN / TFRS data on 0811 SSgt selection rates before asking the battery gunny where you stand.
    The SSgt selection board runs on FitRep relative value, not composite score alone — but composite score feeds the board's read of the non-FitRep inputs. PFT/CFT scores, rifle qual, MCMAP belt, education credits (Tuition Assistance-funded college coursework, CCAF enrollment), Pro/Con marks averaged — all feed the composite. Know your current composite score, know what the SSgt selection rate for 0811 has been in recent cycles (pull the MARADMIN data), and know which variable in your composite is the gap. The section chief who knows his own composite before the battery gunny's monthly check-in is the section chief who is managing his own SSgt candidacy.

Technical Mistakes — Concrete Consequences

  • Verbal counseling only — no page-11 entry, no formal counseling sheet on file.
    If it is not in writing, it did not happen. When a Marine appeals an Article 15 or files an IG complaint, the chain's first move is to pull the counseling file. A verbal counseling that is not documented is invisible to the investigating officer and works against you — not the Marine. The company commander cannot defend a section chief who counseled verbally and let a performance problem compound over six months without a paper trail. Five minutes of page-11 entry is a year of administrative defense. The section chief who keeps current counseling entries on every Marine in the section — monthly at minimum, documented adverse entries within 24 hours — is the section chief the battery gunny can stand behind.
  • Letting the senior cannoneer run the crew through a misfire procedure without the section chief physically present on the gun.
    The misfire procedure under TM 9-1025-215-10 requires the section chief's presence and authorization at specific steps — the wait time after the misfire, the breech opening sequence, the round extraction procedure. A misfire handled by a cannoneer without the section chief present is a UCMJ and safety-investigation risk if something goes wrong, because the TM prescribes the section chief's role in the procedure. The section chief who leaves the gun during a misfire is the section chief named first in the Class-A mishap investigation narrative.
  • Doing the gunnery work yourself instead of teaching the Cpl to run it — aiming circle setup, firing data brief, registration sequence.
    The section will fail the MCCRE evaluation when you go to Sergeants Course for three weeks. The Cpl who has never run the aiming circle setup without you checking the numbers behind him will run it cold on the evaluated lane with the MAGTFTC evaluator watching. The battery gunny's read of a Cpl who fails a section task because the section chief never trained him to do it is a read on the section chief's leadership, not the Cpl's competence. Train the Cpl to run the section's core tasks to the same standard you run them. The section chief who is indispensable is the section chief whose section is fragile.
  • Hiding a SAPR, EO, or behavioral health concern from the chain to protect the Marine's privacy or reputation.
    SAPR reporting requirements under current Marine Corps policy (MCO 5354.1 — verify current revision on Marines.mil) include defined reporting timelines. The behavioral health referral window for a Marine expressing self-harm ideation is measured in hours, not days. The section chief who hides a reportable incident to protect the Marine is the section chief who explains to the battalion IG why the incident was not reported within the required window. The Marine is better served by the system — SARC (Sexual Assault Response Coordinator), behavioral health team at the Branch Medical Clinic, battalion chaplain — than by the section chief's discretion. Routing the Marine to the right resource inside 24 hours is the section chief's job; covering the incident is not.
  • Going around the battery gunny to the 1stSgt or battery commander with a section-internal problem.
    The battery will know within a day that you went around the battery gunny. The 1stSgt will tell him. The battery commander will tell him. The battery gunny stops trusting you with anything that matters — section assignments, fire plan slots, MCCRE lane assignments — and the FitRep cycle that follows will reflect the gap. The chain runs through the battery gunny for a reason. The fix is one direct conversation in his office with the door closed, one apology, and a year of rebuilding the trust you spent in an afternoon.

Career Decisions at This Rank

  • Lateral move pipeline at Sgt — MARSOC A&S, Reconnaissance (BRC), or remain 0811 section chief
    The major lateral pipelines are open at Sgt but the time investment compresses against Sergeants Course, the SSgt board window, and the section chief tour. MARSOC Assessment and Selection (A&S) at Camp Lejeune is the entry point for the 0372 Critical Skills Operator pipeline; the full MARSOC training package runs seven to nine months including the Marine Raider Training Center course. MARSOC Sgts have a fundamentally different career arc — different OPTEMPO, smaller community, different post-service market. Reconnaissance (BRC at Coronado, roughly nine weeks, leading to 0321 Recon Man assignment) is open at Sgt. The honest math: each lateral pipeline is career-shaping and forecloses the conventional artillery section chief trajectory. The section chief who is genuinely drawn to special operations should screen at Sgt, when the physical peak and the career trajectory flexibility are both available. The section chief who is considering it because the section chief billet is hard should think longer — the lateral pipeline is harder. Past mid-Sgt, the screening windows narrow.
  • B-billet pipeline at Sgt — DI duty at MCRD, MSG program, Recruiter School
    B-billet (special duty assignment) at Sgt is a different career calculation than at Cpl. Drill Instructor duty at MCRD Parris Island or San Diego is roughly three years; the DI tour identifier is a known positive marker at the SSgt board and the GySgt board, and many SgtMajs came up through DI duty as Sgts. Marine Security Guard (MSG) at Quantico opens embassy postings globally — 12-to-36-month assignments at U.S. embassies in a fundamentally different operational environment. Recruiter School in San Diego (roughly six weeks) opens a recruiter tour at a civilian recruiting station. Each B-billet pays a special duty assignment allowance, accelerates professional development in ways the gun line does not, and is visible at the SSgt board. The cost: DI tour family quality-of-life is brutal; MSG and recruiter tours are unaccompanied or effectively unaccompanied in small civilian communities far from a base. Talk to the Sgts who have done the tour before you volunteer.
  • Sergeants Course in-residence versus CDET distance education
    In-residence Sergeants Course at the regional Marine Corps NCO academy is the standard outcome and the preferred choice whenever the deployment schedule allows it. CDET distance education is the fallback for MEU deployments or FIREX rotations that consume every available in-residence window. The SSgt selection board reads PME completion; both variants satisfy the completion requirement. The practical difference: in-residence is more rigorous, builds a professional peer network of Sgts from across the Marine Corps that will be relevant for the next decade, and is the option the battery gunny and the battalion SgtMaj recommend when asked. Schedule the in-residence slot 90 days out from the course drop. If the deployment calendar forces CDET, document the conflict with the battery gunny and complete CDET to the same standard you would bring to an in-residence course.
  • Reenlistment at Sgt — indef to compete for SSgt, lateral move contract, or EAS
    Reenlistment math at Sgt is different from Cpl. SRB tier and bonus amounts for 0811 Sgts at reenlistment are published in current MARADMIN messages — pull the current MARADMIN before sitting with the career planner. The options typically include: indefinite reenlistment to compete for SSgt on the centralized selection board, lateral move contract (MARSOC, Recon, B-billet), station-of-choice for the next tour, school-of-choice, or SACO (Special Assignment Career Option) variants. The honest math: Sgts who EAS at first reenlistment leave the SSgt trajectory potential on the table; Sgts who reenlist to chase the SRB bonus without a clear billet plan end up underwater on the contract. The career planner conversation is structured — show up with a specific billet preference and a PME completion plan, not a question about whether to stay.
  • Commissioning at Sgt — MECEP, ECP, or remain enlisted to compete for SSgt and the section chief trajectory
    For Sgts with college credits through Tuition Assistance or a bachelor's degree already in hand, the Marine Enlisted Commissioning Education Program (MECEP) and the Enlisted Commissioning Program (ECP) are available. MECEP sustains active-duty pay and benefits while the Marine completes the degree at a participating university; ECP is the direct commission for Sgts with an existing bachelor's degree. The honest test: are you better at running a gun section or at building systems, writing operations orders, and running staff work? Sgts who love section chief work make average platoon commanders. Sgts who keep asking 'why is the fire plan built this way' make excellent XOs and battery commanders. Talk to the platoon commander and the battery commander — the officer chain's read of commissioning potential is the leading indicator. Sgts who stay enlisted and compete for SSgt, GySgt, and eventually SgtMaj make a different kind of institutional contribution. Neither path is wrong; both require honest self-assessment.

How the Seat Varies by Unit Type

  • Active component artillery regiment — 10th Marines (Lejeune), 11th Marines (Pendleton)
    The standard Sgt 0811 assignment. Section chief in a rifle battery with a MEU PTP workup cycle → MEU deployment afloat → reset → FIREX/CAX rotation at MCAGCC Twentynine Palms. The platoon sergeant is a SSgt, the battery gunny is a GySgt with a decade of howitzer section experience, and the 1stSgt of the battery is reading FitReps on every section chief in the battery. High tempo, high visibility, and the MCCRE evaluation cycle is continuous through the workup. Section chiefs at 10th Marines are running missions that integrate with Marine Expeditionary Force-level fires planning; section chiefs at 11th Marines work through the I MEF fires architecture. The section chief who runs a clean MEU BLT deployment comes back with the FitRep narrative the SSgt board reads favorably.
  • 12th Marines — forward deployed, III MEF, Okinawa
    Unaccompanied tour for most Sgts on Okinawa (verify the current allowance policy with the battery gunny — dependents-restricted vs. dependents-authorized status at Camp Hansen and Camp Schwab varies). The operational rhythm includes JWTC (Jungle Warfare Training Center at Camp Gonsalves) training rotations, partner-force exercises with the Korean Marine Corps, Japan Ground Self-Defense Force, and Philippine Marines, and the Indo-Pacific contingency response posture that makes the 12th Marines' section chief experience distinct from CONUS-based artillery. The Sergeant who is away from family for 12 months while running a section chief billet on Okinawa comes back with an operational credibility the CONUS-based section chief does not have. The liberty environment considerations are real — SOFA requirements and curfew enforcement are enforced at the command level.
  • Reserve component artillery battalion
    Reserve Sgt 0811 section chiefs face a fundamentally compressed qualification and evaluation opportunity timeline. Monthly drill weekends plus annual training (AT) provide the touchpoints for section-level collective task completion, MCCRE evaluation, and FitRep cycle administration. The total annual hours in a reserve component artillery battalion are a fraction of the active-component equivalent. Section chiefs who are serious about SSgt board competitiveness in the reserve component may pursue active-duty training (ADT) orders to supplement the qualification timeline. The MCCRE evaluation at AT is the reserve section chief's primary evaluation event — it carries the same T&R tracking weight as the active-component MAGTFTC evaluation but occurs in a compressed AT window. The SSgt selection board processes reserve and active component records through the same centralized mechanism; the FitRep relative value comparison at the board includes both.
  • Section chief on MEU BLT — afloat on ARG shipping
    Section chief on the Battalion Landing Team embarked on amphibious shipping (LHD/LPD/LSD) during a 6-to-7-month MEU deployment. The M777A2 is broken down and stowed in vehicle cargo during transit; maintenance runs on the ship's schedule with limited tooling and work space. MEU-SOC mission profiles (TRAP, NEO, helo raid, mechanized raid, amphibious assault, VBSS support) are the operational framework; the section chief executes the gun line component of the fires mission in the planning cycle with the fires officer and the battalion S-3. The MEU deployment is the formative section chief operational event — Sgts who deploy MEU as section chiefs come back with the operational credibility the SSgt board reads. Port visits and contingency response posture days fill the rhythm. The MEU SgtMaj watches section chief performance in every exercise event.
  • FIREX / CAX evaluation rotation at MCAGCC Twentynine Palms as section chief
    The MAGTFTC (Marine Air Ground Task Force Training Command) evaluators at Twentynine Palms run the CAX (Combined Arms Exercise) and ITX (Infantry Training Exercise) with external OC/T evaluators grading section-level collective tasks against NAVMC 3500.55 standards. The section chief at Twentynine Palms is under evaluator observation in a way that home-station training does not replicate — every section occupation, every registration, every fire mission, and every check-fire procedure is graded. The section chief whose section performs cleanly on the MAGTFTC evaluated lane comes back with the most actionable FitRep supporting data available in the artillery regiment's calendar. The section chief whose section takes corrective action well after an imperfect MCCRE lane and executes better on the next iteration is the section chief the battery gunny names as the benchmark for unit recovery.

What Good Looks Like at This Rank

The good Sgt section chief is the section chief the battery gunny puts on the hardest mission in the fire plan — the time-on-target coordination with a sub-30-second suspension window, the complex fuze setting sequence, the registration mission that has to be completed before the battalion's indirect fire support coordination window opens. The battery gunny does not stand over this section chief's gun when the mission runs. He is at the FDC because he has watched this section chief run missions for 18 months and he knows the 'READY' call is real, the lot is right, and the round that goes downrange is what the FDC ordered. His Cpls are FitRep-ready and on a section-chief-candidate qualification track because he counseled them monthly with a counseling entry that described observed behavior, told them where the composite score gap was, and gave them a specific 90-day plan to close it. The three Cpls who pin Sgt during his section chief tour do so because the section chief identified the window 12 months out and built the composite score stack with them — school slot, MCMAP tape test, rifle qualification block, education points — rather than discovering the gap at the cutting score deadline. The battery gunny mentions his name to the platoon sergeant as the reason those Cpls made Sgt. The SgtMaj of the regiment knows his name within the first year — and the SgtMaj's read of which Sgts are future SSgts and future battery gunnys is the implicit input on every assignment slate. The FitRep Section A narratives on his Cpls are clean. The reporting senior — the platoon commander — calls him at the end of the rating period to ask about specific Cpls by name because the Section A actually describes what the Cpl did in action-result-impact terms rather than performing as a general recommendation letter. The reviewing officer — the battery commander — does not have to revise the Section A inputs for the battalion FitRep board because the language is specific, defensible, and proportionate to the actual performance. The section chief whose FitRep inputs survive the battalion review without revision is the section chief whose own FitRep narrative the reporting senior writes with confidence.

Preview — The Next Rank

SSgt is the platoon sergeant rank in the artillery section system. The Marine Corps's gun platoon SSgt is the senior NCO of two to four howitzer sections and the FDC element feeding them — or the gun line chief for an entire battery. The transition from section chief to platoon sergeant is the transition from owning one gun to owning three or four guns, three or four Sgts, and the battery-level administrative cycle that feeds the battery gunny's input to the battalion commander. The FitRep load at SSgt is the piece the Sgt billet does not fully prepare you for. At Sgt you write two FitRep Section A inputs per year — one per Cpl on your section. At SSgt you write three to four Sgt FitReps per cycle, and the reporting senior (the platoon commander or battery XO) builds the attribute evaluations off your Section A input for each. The FitRep relative value placement at SSgt has direct SSgt-to-GySgt board implications that compound across cycles; one weak FitRep cycle at SSgt moves the GySgt timeline by years. Writing Section A at the quality level the battalion FitRep board accepts without revision is the administrative skill the SSgt builds over the first 18 months of the platoon sergeant billet. Job content at SSgt operates at battery and battalion level. The battery gunny and the battery commander know your name and read your work weekly. The S-3 fires officer schedules training around what your sections can support. The battalion SgtMaj is reading your FitRep against every other SSgt platoon sergeant in the regiment. The GySgt-to-MSgt/1stSgt board is the next major career decision point — the split between the troop leadership track (1stSgt, eventually SgtMaj) and the occupational SME track (MSgt, regimental fires chief, division FA staff, or master gunner billet at the Field Artillery School) begins to shape itself at the SSgt billet. Know which track you are building toward before the battalion SgtMaj asks — because he will ask.
FAQ

0811 E5 — Frequently Asked Questions

Q01What does a E5 0811 (Field Artillery Cannoneer) actually do?
You run a howitzer section — six to eight Marines and yourself on an M777A2 — and you are responsible for their training, their equipment, their families, and their careers.
Q02What's the most important thing to know as a E5 0811?
The gun section is yours.
Q03What does a typical day look like for a E5 0811?
Time-blocked day at the E5 0811 rank tier: 0500 Wake. Phone check for the section group chat — any overnight incidents among your Marines. Send the section's next-day priority brief if you did not send it at 1700 last night. PT uniform, head to the battery, 0530 PT formation. You take section accountability and report to the platoon sergeant. The section chief who is the last NCO into formation is the section chief the platoon sergeant notes. Report accountability clean; any missing Marine is your problem before it becomes the platoon sergeant's, 0545–0700 Unit PT.…
Q04What mistakes get E5 0811 soldiers fired or relieved?
Missing Sergeants Course PME through schedule conflict and not recovering the slot. The SSgt board reads PME completion; a Sgt who is not Sergeants Course-complete when the board meets is visibly disadvantaged in the relative value comparison regardless of FitRep quality; NJP, DUI, or fraternization at Sgt. At this rank, UCMJ action forecloses the SSgt selection board, removes the section chief billet, and in most cases results in administrative separation under MARCORSEPMAN.…
Q05What career decisions matter most at the E5 0811 rank tier?
Lateral move pipeline at Sgt — MARSOC A&S, Reconnaissance (BRC), or remain 0811 section chief — The major lateral pipelines are open at Sgt but the time investment compresses against Sergeants Course, the SSgt board window, and the section chief tour. MARSOC Assessment and Selection (A&S) at Camp Lejeune is the entry point for the 0372 Critical Skills Operator pipeline; the full MARSOC training package runs seven to nine months including the Marine Raider Training Center course. MARSOC Sgts have a fundamentally different career arc — different OPTEMPO, smaller community,…
Q06What's next after E5 for a 0811 (Field Artillery Cannoneer) in the Marines?
SSgt is the platoon sergeant rank in the artillery section system.
Q07What manuals and regulations does a E5 0811 need to know cold?
TM 9-1025-215-10 — M777/M777A2 Operator's Manual (own this manual; the battery gunny will quote it back to you on every maintenance report).; MCWP 3-16.1 / FM 3-09 — Artillery Cannon Gunnery (the gunnery reference you run the section against; section chiefs who own the gunnery manual get called to the FDC brief).; NAVMC 3500.55 — Field Artillery T&R (Sgt / section-chief collective tasks; you are evaluated against this).

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