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←Back to 13M Multiple Launch Rocket System (MLRS)/High Mobility Artillery Rocket System (HIMARS) Crewmember — overview, pay, training, civilian translation, reviews
13ME1-E3

Multiple Launch Rocket System (MLRS)/High Mobility Artillery Rocket System (HIMARS) Crewmember

E-1 to E-3 (Junior Enlisted) · Army

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

13M OSUT runs at Fort Sill, OK — the U.S. Army Field Artillery Center of Excellence at Snow Hall and the ranges around West Range, Henry Post, and Thompson Hill. The course is built as One Station Unit Training (BCT + Rocket-Crew AIT in one block; verify the current POI length with your section's training NCO — FA OSUT length has been adjusted over the years). You will leave Sill knowing the cannoneer drills on whichever platform the schoolhouse runs you on. You will not leave Sill knowing what your specific battery actually demands — that part starts the first time a section chief in 17th FA Brigade (JBLM HIMARS), 18th FA Brigade (Fort Liberty HIMARS, formerly Fort Bragg until the 2023 rename), 41st FA Brigade (Germany HIMARS), or 75th FA Brigade (Fort Sill M270) reads your DA Form 1059 end-of-course academic eval and signs you for a launcher.

The Honest MOS Read
You enlisted 13M (MLRS/HIMARS Crewmember — the rocket-launcher cannoneer in the Field Artillery branch), finished BCT, and went through or just finished 13M OSUT at the U.S. Army Field Artillery School at Fort Sill, OK. The course is run by 1st-78th FA, 1st-19th FA, or a sister training battalion in the 434th FA Brigade depending on the cycle — verify the actual host battalion with your drill sergeant cadre, because the schoolhouse has cycled battalions over the years. You learned the launcher you trained on (most cherries today train on M142 HIMARS — the wheeled, single-pod, lighter, C-130-airliftable platform — because that is where the Army's fielded inventory is heaviest; some cherries train on M270A2 MLRS — the tracked, two-pod, heavier, armored variant — depending on assignment). Either way you came out with the cannoneer-position task list in STP 6-13M, the basic crew drills, a working understanding of the launcher's fire-control panel, pod-handling discipline with the launch pod container (LPC) and the HEMTT-LHS resupply truck, the comms backbone on the AN/PRC kit and the platoon net, and the safety-zone discipline that the rocket community lives or dies on. The first thing nobody briefs hard enough at OSUT: 13M is a section-attached MOS more than it is a launcher-by-itself MOS. Your career happens at the launcher with a small crew — Section Chief, Gunner, Driver, Ammo Team Chief on the resupply truck, you as a cannoneer — and the section chief's read of you in the first 90 days at the gun line sets your file for the next 18 months. The recruiter probably did not brief that the launcher is not the Bradley or the tank — it is a precision long-range fires platform that fires very few rounds in training compared to a cannon battery, and the discipline at the launcher is built in the dry drill and the pod-handling rehearsal far more than in the live shot. The cherries who came in expecting to "shoot rockets every week" are the cherries who lose interest in PMCS, lose the section chief's read, and lose the trust to be at the gunner position when the section finally does fire. Your gaining unit determines almost everything about your first three years. The launcher community lives in two structural variants: HIMARS batteries in 17th FA Brigade at JBLM (a strategic-fires brigade tied to the I Corps fight in the Pacific), 18th FA Brigade at Fort Liberty (the XVIII Airborne Corps fires brigade — Fort Liberty was renamed from Fort Bragg in 2023), and 41st FA Brigade in Germany (the V Corps fires presence in USAREUR-AF); and M270 / M270A2 MLRS batteries in 75th FA Brigade at Fort Sill (the III Corps-aligned M270 community). The HIMARS truck is wheeled, lighter, and built to be C-130 airliftable — that drives a different deployment posture than the tracked M270A2. The M270A2 is heavier and armored, carries two pods instead of one, and lives next door to ABCTs. Verify the actual fielding plan with your battery 1SG when you sign in — the Army has rolled fielding plans and the brigades have shifted munition mixes over the years, and the platform underneath you matters for everything from your driver's license category to the road march drill you will rehearse for the next year. Promotion to E-2 is automatic at 6 months TIS per AR 600-8-19. E-3 / PFC is automatic at 12 months TIS with 4 months TIG (waivable to 6/2). E-4 is the first real promotion gate — 24 months TIS / 6 months TIG, both waivable, but the chain has to actively recommend you. The 13M promotion-point cutoffs move based on FA inventory and the launcher community's structural billet count; pull the current HRC promotion-point MILPER before assuming the cutoff you heard last quarter is still the cutoff this quarter. Combat Training Center rotations are the institutional rhythm where the launcher community trains. NTC at Fort Irwin (desert, decisive-action force-on-force, the home rotation for M270 / 75th FA), JRTC at Fort Johnson (renamed from Fort Polk in 2023, jungle and woodland, where light-BCT-supporting HIMARS battalions integrate), and JMRC at Hohenfels (the home rotation for USAREUR-AF units including 41st FA Brigade) cycle units through 2-3 week rotations in the readiness model. Your battery's CTC rotation will be the most informationally dense event of your first enlistment — and the place where the section chief, the platoon sergeant, and the FDC chief at battery level all figure out who you actually are when you are tired, the launcher is dirty, and the section is short two crew because somebody got hurt humping a pod the previous night. The 13M munition family matters earlier than you would think. The platform fires the Guided MLRS (GMLRS) family — GMLRS unitary and GMLRS alternative-warhead at standard range, ER-GMLRS (Extended Range) as the next-generation reach-extender — and the longer-range ATACMS (Army Tactical Missile System, being phased out and replaced) and PrSM (Precision Strike Missile, entering service). The names matter because the safety zones, the surface danger zones (SDZs), the firing data, and the load-out math are different per round, and the cherry who confuses one for another at a pre-combat inspection embarrasses his section chief in front of the platoon sergeant. You will not be the one selecting the round, but you will be the one mating the pod and verifying the markings. Read the placards. Read them again before each move. The 13M school stack at this rank is short. You are not eligible for BLC yet, you are not running schoolhouse seats yet, and your visible credential at this stage is your section chief's signature on your STP 6-13M task list. Adjacent schools depend on supporting unit: Air Assault (Fort Campbell or one of the satellite courses, run by the Sabalauski Air Assault School cadre at the 101st or sister courses) if your battery is supporting an air-assault-coded BCT, Airborne (Fort Moore, 1st Brigade 507th PIR) if your battery is airborne-coded (less common for launcher batteries but real for the 18th FA support to 82nd ABN). The early Master Fires Sergeant Course conversation at Fort Sill is years away — but the cherries the section chief mentions to the PSG as future-MFSC-track are the cherries who showed up to PMCS on Sunday afternoon without being told. The pay piece the recruiter probably did not brief hard enough: BRS (Blended Retirement System) is the default for everyone enlisted after January 2018. You get 1% government TSP match automatically and up to 4% more match if you contribute 5% of base pay. Most cherries do not max this. Talk to S-1 about TSP contribution in your first week at the unit, not your second year. At E-1 base pay (~$2,100/mo in 2026 — verify the current pay table on the DoD military pay site), 5% of base is roughly $105/month — most cherries say they cannot afford it, but they spend more than that on the on-post fast food rotation and the barracks streaming subscriptions.
Career Arc
  • 01BCT (Fort Jackson / Fort Moore / Fort Leonard Wood / Fort Sill) → 13M OSUT at Fort Sill, U.S. Army Field Artillery School (BCT + AIT combined; verify current POI length).
  • 02End-of-course academic eval (DA Form 1059) — follows you to gaining battery.
  • 03PCS to gaining HIMARS battery in 17th / 18th / 41st FA Brigade, or M270 battery in 75th FA Brigade.
  • 04Reception, in-processing, first counseling cycle with section chief — your file at the battery starts here.
  • 05Month ~6 TIS: E-2 automatic per AR 600-8-19.
  • 06Month ~12 TIS: E-3 / PFC (4 mo TIG, waivable to 6/2).
  • 07First battery FTX with launcher and section — the section chief's read of you forms here.
  • 08First launcher live-fire (Section Live Fire / Battery Live Fire) — clean cannoneer drills move you onto the trust-the-private list.
  • 09First CTC rotation (NTC for M270 batteries, JRTC for HIMARS supporting light forces, JMRC for 41st FA Brigade) within 18-24 months.
  • 10E-4 promotion gate at 24 mo TIS / 6 mo TIG with chain recommendation; Driver-position or Gunner-position track conversation starts.
Common Screwups
  • ×Sleeping on TSP enrollment under BRS. The 1% automatic + 4% match if you contribute 5% compounds across a 20-year career; starting at 19 vs. 26 is roughly 4x the balance at retirement.
  • ×DUI / drug pop — separation under AR 635-200 ch. 14, an RE code that follows you out the gate, and a sensitive-billet history (you signed for fire-control components, SKL fill devices, encrypted radios, and launcher-mounted sensitive items) that the chain has to write up before separation.
  • ×ACFT (Army Combat Fitness Test) fails — repeated fails trigger flagging per AR 600-8-2, no promotions, no schools, eventual chapter under AR 635-200; launcher crews ruck less than infantry but the battery 1SG still inspects scores.
  • ×Treating OSUT as the hard part. Your first battery's launcher FTX rhythm, gunnery cycle, and CTC train-up are materially harder than anything you did at Sill.
  • ×Article 15 in the first 12 months at the battery — the FA community is small, the 13M career file is small, and a junior soldier with a UCMJ entry in his first year buries himself on the promotion-point ladder before he ever sees a board.

A Day in the Life

  • 0500Wake. Roll out of the rack. Hit the head, shave, uniform check, PT clothes on. Make the bed to the platoon SOP — the squad will fail an inspection because of you, not because of itself.
  • 0530PT formation. Stand at parade rest behind your section chief. Accountability check, uniform check, then to the battery PT field.
  • 0600-0700Battery PT. Cardio days the battery runs together (the 17th / 18th / 41st / 75th FA Brigade rhythm is similar to a line BCT — Tuesdays heavy lift, Wednesdays heavy ruck or formation run, Thursdays interval, Fridays company event). Launcher crews PT together so the section's aggregate score reads well at the BC's read.
  • 0700-0900Hygiene, change uniforms, breakfast at the DFAC or in the barracks. Walk to the battery area or the motor pool depending on the day's tasks.
  • 0900First formation. Platoon sergeant reads announcements. Section chief hands out the day's tasks. You stand still; you listen; you do not check your phone.
  • 0915-1130Work call. Launcher PMCS at the motor pool (the section chief grades you on the operator-level TM tasks), pod-handling drills with the resupply truck and the HEMTT-LHS, fire-control panel BIT checks, comm-shop time on the AN/PRC kit and the launcher-mounted radios, or section training led by the section chief (cannoneer-position drill blocks, safety-zone walkthroughs, MEDEVAC 9-line drill).
  • 1130-1300Chow. DFAC if you have a meal card; barracks or off-post if you have BAS. Most cherries eat at the DFAC for the first 18 months. You sit with the section — not with the FDC crew, not with the maintenance crew, with the section chief's crew.
  • 1300-1500Afternoon work call. More launcher / pod / motor-pool work; battery-level training (SHARP, EO, ATFP, OPSEC, safety, mandatory online courses); STP 6-13M task certification under the section chief's eye; range support if the battery has live fire that week.
  • 1500-1630Final formation. Section chief briefs the next day. Sensitive items checked back in (CVC headset, SKL fill device, NVGs, optics, fire-control components — the launcher carries serial-numbered gear and every item is accounted for every day). You account for your gear and your weapon — every time, every day.
  • 1630Released. Usually. CQ, staff duty, motor-pool detail, range-prep detail, or post-FTX cleanup may extend your day by hours or days.
  • 1700-2000Personal time. Barracks (gym, study, video games, errands), off-post for those with cars, family for the small percentage who are married this young. The cherry mistake here is binge drinking with the section — three months of weeknight drinking makes for the worst Monday formation read of your young career, and the section chief will see it.
  • 2000-2200Study time. The smart cherry studies STP 6-13M task cards, ATP 3-09.60 safety chapter, the platform TM, the section SOP. Phone call to family. The unit's 22:00 lights-out for barracks soldiers is policy at many FA batteries.
  • 2200Lights out. Tomorrow starts at 0500.
  • Field rotation (battery FTX / Section Live Fire / Battery Live Fire / CTC at NTC / JRTC / JMRC)The clock collapses. Up at 0500 for stand-to; sector / launcher / firing-point for the day; chow when the section chief allows; sleep in 2-4 hour shifts under a poncho or in the launcher cab. A 5-day FTX feels like 10. A 14-day CTC rotation feels like 30. The launcher is your home; the section chief is your alarm clock; the FDC is your boss.

Weekly Cadence

The Mon-Fri rhythm for a cherry 13M is dictated by the section chief's training schedule, which itself runs on the platoon sergeant's quarterly training brief and the battery 1SG's calendar. Monday is high tempo — PT, launcher PMCS, briefings, paperwork that piled up over the weekend, and any pre-combat ritual the section chief wants the cherries to rehearse for an upcoming training event. Tuesday and Wednesday are training days — Sergeant's Time Training (STT) where the section chief runs the section through STP 6-13M tasks, crew drills, pod-handling drills, and safety-zone walkthroughs. These are the days that matter for the section chief's read of you. Show up early. Volunteer for the lane. Carry the pod when you do not have to. The cherries the section chief mentions at the platoon sergeant's QTB are the cherries who showed up to Tuesday-Wednesday with their head right. Thursday is often ranges or motor pool day; Friday is the company-level event (PT, hails-and-farewells, awards formation, safety stand-down, 1SG inspection of the battery's kit accountability) and release. The bad cherry coasts through Mon-Wed and tries to make up the work on Thursday; the good cherry hits Mon-Wed hard and is on the short list for the BC's coin by Friday's formation. The launcher community is small enough that the section chief's read of the cherry is the platoon sergeant's read by month three, and the BC's read by month six. The week's second rhythm is administrative. Common task training (CTT), mandatory online courses (SHARP, EO, ATFP, OPSEC, safety), weapons qual cycles, gunnery cycles, license-up cycles on the launcher and the HEMTT family — these come in waves dictated by the battery training schedule. The cherry job is to be present, prepared, and squared away. The cherry's career-killer is to be the soldier the section chief has to chase for an overdue mandatory course at 1700 on a Friday before a long weekend. Field rotations (battery FTX, Section Live Fire, Battery Live Fire, JRTC / NTC / JMRC) collapse the rhythm — when the battery is in train-up, garrison time is for sleep and for the family conversation about why you were not home three nights this week.

Key Skills — How to Drill Each

  1. 01
    Run the cannoneer position on a launcher crew drill — emplace, lay, prep-to-fire, fire, displace — to the STP 6-13M and ATP 3-09.60 standard, with no coaching from the section chief.
    The crew drill is muscle memory. The section chief calls actions; you respond by position. Learn your task list for the cannoneer position cold — the STP 6-13M task card for each step is the legal-and-doctrinal standard the section certifies you against. Drill the steps dry on the launcher during garrison weeks: emplace (truck into firing point, stabilize on the leveling pads), lay (azimuth and elevation reference, fire-control system lock), prep-to-fire (pod check, safety-zone clear, comms confirm), fire (the section chief's call, you do not improvise), displace (drive off the firing point on the section chief's command, Shoot-and-Scoot). The cherry who fumbles a step at JRTC is the cherry the section chief takes off the gunner-position track for a quarter.
  2. 02
    Handle a rocket pod / launch pod container (LPC) on the HEMTT-LHS or sister resupply vehicle — uncrate, lift, mate, lock — without dropping, fouling a guide pin, or pinching a hand.
    Pod handling is the highest-injury-rate task in a launcher section. The LPC weighs roughly 5,500 lb loaded — verify the current weight against the platform's TM because pod weight varies by munition (GMLRS unitary vs. GMLRS alternative-warhead vs. ATACMS vs. PrSM). The HEMTT-LHS (Heavy Expanded Mobility Tactical Truck — Load Handling System) lifts and seats the pod onto the launcher; the cannoneer's job is guide-pin alignment, lock-and-latch verification, and clear-the-truck before the section chief calls 'fire.' Drill the procedure dry with the ammo team chief in the motor pool until the section chief stops watching. The cherry who lets a pod swing into a stanchion or who keeps a hand inside the elevation arc when the launcher slews is the cherry whose name is on a 15-6 and a Class A safety report.
  3. 03
    Drive the launcher (M142 HIMARS wheeled or M270A2 MLRS tracked) under blackout with NVGs to PMCS standard — fluids, tracks / tires, hydraulics, fire-control connections, GPS sync, BFT / JBC-P functional.
    License-up on the launcher and the HEMTT family the section runs. The unit's licensing NCO signs the OF-346 against the platform-specific licensing requirements — verify the current procedure with the motor sergeant. Daily PMCS to the platform TM (the operator's manual is the legal reference for the check sheet); weekly deep PMCS with the section chief. The launcher's fire-control electronics are sensitive — a stripped fire-control cable, a corroded GPS antenna connection, or a hydraulic leak on the leveling pads is the kind of problem that grounds the section on a firing-point timeline. The cherry who runs a clean PMCS at 0500 before the section moves is the cherry the section chief lets behind the wheel of the launcher; the cherry who skips PMCS to chase chow is the cherry on the resupply truck's tailgate.
  4. 04
    Operate the launcher's fire-control system at the cannoneer level — power-up, BIT (Built-In Test) checks, GPS sync, mission receive from the FDC link via AFATDS, safety checks before the launcher elevates.
    AFATDS (Advanced Field Artillery Tactical Data System) is the FA's tactical-data-system spine that feeds your launcher fire-mission data. The cherry-level skill is what you own at the launcher: BIT check completion, GPS sync confirmation, mission display on the launcher fire-control panel, safety-zone validation against the launcher's range and azimuth. The platform's fire-control system has a documented power-up and BIT-check sequence in the TM — memorize the steps. The cherry who can run the BIT check at 0200 in the rain and report a clean system to the section chief is the cherry trusted on the gunner-position track at SPC; the cherry who pages the section chief for every system fault is the cherry stuck on the resupply truck.
  5. 05
    Brief and execute the launcher's safety zones — surface danger zone (SDZ), firing-point clearance, rocket-back-blast area — to the ATP 3-09.60 standard before every fire mission.
    The launcher's safety zones are the procedural backbone of the rocket community. SDZ varies by munition (GMLRS unitary, GMLRS alternative-warhead, ER-GMLRS, ATACMS, PrSM each have different SDZ tables — verify the values against the platform TM and the unit SOP), the back-blast cone behind the launcher is real and lethal, and the firing-point clearance includes both the launcher's footprint and the resupply vehicle's working radius. Read ATP 3-09.60's safety chapter once before your first live fire; read it again before every gunnery cycle. The cherry who recites the back-blast distance for the rounds the section fires is the cherry the section chief lets near the launcher when it elevates.
  6. 06
    Maintain your kit so it survives a tactical road march and a 5-to-14-day FTX — tape and dummy-cord what matters, waterproof your CVC bag and your sleep system, throw out what you do not need.
    Lay your fighting load and your CVC (Combat Vehicle Crewman) kit on a poncho in the barracks the night before a movement. Test every snap, every retainer, every dummy-cord. The CVC headset, the NVGs, the SKL (Simple Key Loader) for the crypto fill, the spare batteries for the fire-control panel, the squad radio fill — all of it goes in a kit bag that survives the launcher's vibration and the road march. Tape the noisy buckles. Waterproof socks, TQs, the CVC headset spare go in a freezer Ziploc. Everything else goes in the assault pack — and if you did not use it in the last field, leave it in the barracks for the next one. The cherry who arrives at the firing point with broken kit is the cherry who delays the section.

Manuals & References — What Chapters Matter

  • STP 6-13M — Soldier's Manual and Trainer's Guide, MOS 13M (the task standard for every 13M position).
    This is the validation reference for every cannoneer, driver, gunner, and ammo team chief task. The section chief signs you off task-by-task against the STP; every Sergeant's Time Training event at the launcher runs off STP 6-13M tasks. Print the task cards for the tasks you have not been certified on; carry them in your patrol cap.
  • ATP 3-09.60 — Multiple Launch Rocket System and HIMARS Operations.
    The doctrinal spine for the launcher community. Chapters on the launcher's employment, the section / platoon / battery organization, the fire-mission cycle, the safety zones, and the munition families (GMLRS, ER-GMLRS, ATACMS, PrSM). Read the safety chapter and the section operations chapter cover-to-cover before your first FTX. The section chief and platoon sergeant will quote it verbatim.
  • FM 3-09 — Field Artillery Operations.
    The umbrella manual for the entire FA branch. The cherry should skim the chapters on FA organization (cannon vs. rocket / missile vs. target acquisition), fires-warfighting-function basics, and the FA support relationships (direct support, general support, reinforcing, general support reinforcing). It is the framing the BCT FSO and the launcher BC use at the BUB.
  • ATP 3-09 — Fires (the FA branch's capstone doctrinal manual).
    The branch's high-level doctrinal anchor. Light read but worth a skim — it frames where 13M fits in the joint and combined-arms fires architecture. The section chief will quote a sentence at you in counseling and the source is here.
  • STP 21-1-SMCT — Soldier's Manual of Common Tasks, Warrior Skills Level 1.
    The validation reference for the soldier piece — land nav, weapons immediate-action drills, TCCC, common-task training. Even in a rocket section, the cherry has to pass the same common tasks every soldier in the Army has to pass. Carry the task cards for the tasks you have not certified on.
  • AR 670-1 — Wear and Appearance of Army Uniforms and Insignia; AR 600-9 — Army Body Composition Program.
    The grooming, uniform, and tape standards the platoon sergeant inspects against. Know the standard for your age band on AR 600-9; know your right to request the body fat assessment if you exceed the tape. The cherry flagged for non-compliance with AR 600-9 is the cherry pulled from school slots and promotion boards.

Standards — How to Hit Each

  • ACFT 500+ to be left alone, 540+ to start getting noticed for schools — launcher crews are scored against the same standard as the rest of the Army.
    500 is roughly average across the events; 540 puts you above battery average. The deadlift and the hex-bar carry are the lifts to grind; the 2-mile run is the score-killer for cannoneers who let the cardio slide because the launcher does the moving. Squad PT gets you to 500; personal PT after hours gets you to 540. The battery 1SG reads ACFT scores across the platoons — do not be the section embarrassment.
  • Qualify Expert on the M4 every cycle — the slug score is your reputation in the section and the badge stays on your blouse.
    TC 3-22.9 Rifle and Carbine is the standard. The new qualification standards (TC 3-20.40 / TC 3-22.9) score Expert at the high end. Dry-fire 200 reps a week in the barracks; live-fire when the battery puts ammo on the ground; do not show up to the qualification range with a rifle you have not handled since the last cycle. The cherry who scores below Expert is the cherry the section chief coaches up in front of the platoon — once, and only once.
  • Sustainment certification on every 13M cannoneer-position task in STP 6-13M — the section chief signs you off, not the platoon roster.
    The section chief runs through the cannoneer task list with you during the first 60-90 days at the battery. Each task is signed off on a paper or digital task list — keep your own copy and know which tasks are green and which are still pending. The cherry who chases the certification is the cherry on the section chief's bench-list for the gunner position at SPC.
  • License-up on the launcher (M142 HIMARS or M270A2 MLRS) and the HEMTT family of trucks you will actually drive — the unit licensing NCO's OF-346 sits in your record.
    Licensing is the formal procedure the motor sergeant runs. Verify the platform-specific procedure with your unit. The OF-346 (Federal Equipment Operator Identification Card) records the platforms you are licensed to operate. Drive enough hours under a licensed senior soldier to demonstrate competence; pass the road test; get the OF-346 signed. The cherry without a launcher license is the cherry on the resupply truck's tailgate at every FTX.

Technical Mistakes — Concrete Consequences

  • Treating PMCS as a formation event instead of a check sheet with consequences.
    The section chief who finds a hydraulic leak, a stripped fire-control connection, or a fouled GPS antenna at the firing point — not in the motor pool — remembers it for the next counseling cycle. The launcher that arrives at the firing point with a system fault costs the section a fire mission and the platoon a timeline. The 1SG who hears about it at the post-FTX AAR knows the cherry's name.
  • Putting fingers, hands, or boots inside the elevation or azimuth arcs when the launcher slews.
    Crush and pinch injuries on the M142 and M270A2 are a documented hazard. The launcher does not wait for the soldier who left a hand inside the arc; the result is a broken hand at best, an amputation or worse at the limit. A safety stand-down for the battery, a 15-6 investigation, a Class A or B safety report depending on severity, and the cherry's name on the AAR slide for the next quarter's safety brief.
  • Skipping the BIT check or the comms check before the section moves to the firing point.
    The launcher gets to the firing point with a system fault or a dead radio and the FDC waits while the section troubleshoots — sometimes for an hour, sometimes for a fire-mission window. The section chief is on the radio explaining to the platoon sergeant why his launcher is broken; the platoon sergeant is on the radio explaining to the BC. The cherry's name is on the timeline regardless.
  • Losing a sensitive item — fire-control component, SKL fill device, CVC headset, encrypted radio, NVGs, or a launcher-mounted optic.
    The 1SG knows your name now, and not the way you want. Sensitive-item loss triggers a Commander's Inquiry under AR 600-20 and AR 190-11 (Physical Security of Arms, Ammunition, and Explosives), a FLIPL (Financial Liability Investigation of Property Loss) for cost recovery, and a 15-6 if the loss involves crypto or fire-control gear. The cherry's promotion timeline resets by quarters; the section chief's NCOER block read drops; the battery 1SG remembers.
  • Posting OPSEC-relevant photos with launcher numbers, pod markings, tail-codes, firing-point coordinates, GMLRS or ATACMS or PrSM variant markings visible.
    Long-range precision fires are a high-priority collection target for peer competitors. The brigade S2 / OPSEC office runs spot checks on social media; the FA battalion CSM and the BCT FSO hear about it; the cherry who posted a JRTC selfie with a target list or a pod tail-code visible ends up in the orderly room explaining himself to the 1SG and the S2. The unit gets a battalion-wide OPSEC stand-down; the cherry's name is on the email that triggered it.

Career Decisions at This Rank

  • TSP enrollment under the Blended Retirement System (BRS).
    Everyone enlisted after January 2018 is on BRS by default. The government matches 1% automatically and adds up to 4% more if you contribute 5% of base pay. At E-1 base pay (~$2,100/mo in 2026 — verify the current pay table on the DoD military pay site before quoting), 5% is roughly $105/month — most cherries say they cannot afford it, but they spend more than that on the on-post fast food rotation and the barracks streaming subscriptions. The math is unforgiving: starting TSP at 19 with 5% contribution + 5% match, retiring at 39 after 20 years, gets you a TSP balance roughly 4x what starting at 26 gets you. This is the single most consequential financial decision of your first enlistment. Talk to S-1 in your first week.
  • Volunteer for Air Assault / Airborne if the supported unit is coded for it.
    Short, chain-allocated schools that build the career resume early. Air Assault (10 days at Fort Campbell or one of the satellite courses, run by the Sabalauski Air Assault School cadre at the 101st or sister courses) is a common 13M add-on if the supporting BCT or fires brigade is air-assault coded. Airborne (3 weeks at Fort Moore, 1st Brigade 507th PIR) is the standard add-on if the supporting unit is airborne-coded — less common for launcher batteries than for cannon batteries, but real at 18th FA Brigade in the XVIII Airborne Corps fires brigade. The slot is chain-allocated; the section chief and platoon sergeant decide who they push for it. Volunteer early; show up to the unit pre-school PT group; ask the section chief directly. School slots you turn down go to the cannoneer in another section who said yes.
  • Stay 13M vs. early reclass thinking at first re-enlistment window.
    The first re-enlistment window typically opens 12-18 months before contract end. Reclass options are tied to Army-wide MOS shortages — the available list moves quarterly. If 13M is not the seat you wanted (the OPTEMPO, the launcher rhythm, the pod-handling work), the cleanest exit is reclass at first re-enlistment, not chapter discharge. Common 13M reclass paths run toward sister fires MOSes (13B Cannon Crewmember, 13F Joint Fire Support Specialist, 13R FA Firefinder Radar Operator), toward signal (25-series), toward intel (35-series), and toward 68W medic. Talk to the career counselor before signing anything; pull the current HRC reclass list.
  • Driver vs. Gunner track preference for E-4 (the section's seat the chain assigns you next).
    At SPC the section chief moves you off the cannoneer position into either the Driver seat (operates the launcher truck — M142 wheeled or M270A2 tracked — in road march, emplacement, and displacement) or the Gunner seat (operates the launcher fire-control panel under the section chief's eye during the fire-mission cycle). The Driver track values mechanical competence, road-march discipline, and HEMTT family experience; the Gunner track values fire-control fluency, AFATDS familiarity, and the willingness to be the section chief's voice on the radio. Both lead to Section Chief at SGT — the path is different. Talk to the section chief about which seat you are being read for; the cherry who signals interest in one track is the cherry the section chief grooms for it.
  • Marriage and barracks-to-off-post move.
    Getting married as an E-3/E-4 is a financial windfall (BAH bumps from barracks-rate to with-dependents) and a logistical commitment. Off-post housing decisions need PCS analysis (your next move could be in 24 months); spouse employment in military towns is often constrained; child care availability on most posts has a long waitlist. The honest test: if the relationship is real and survived BCT/AIT, the Army's family infrastructure (ACS, Tricare, on-post housing) is functional. If the marriage is for the BAH alone, the relationship will not survive the first PCS. Talk to S1 and ACS in the first week of any change in marital status.

How the Seat Varies by Unit Type

  • 17th Field Artillery Brigade HIMARS (Joint Base Lewis-McChord, WA — I Corps fires brigade aligned to the Pacific)
    17th FA Brigade is a strategic-fires brigade at JBLM running M142 HIMARS in support of I Corps and the Pacific posture. Cherry life is built around the brigade's air-deployability training (HIMARS is C-130 airliftable — air-load drills, manifest discipline, contingency planning for short-notice deployment), the Pacific exercise rotation (Talisman Sabre with Australian forces, Yama Sakura with the JGSDF, joint and combined-arms exercises across allied and partner nations — verify the specific exercises the brigade is running before citing), and the home-station live-fire cycle at Yakima Training Center. The brigade culture values mobility, deployability, and the launcher's strategic reach.
  • 18th Field Artillery Brigade HIMARS (Fort Liberty, NC — formerly Fort Bragg, renamed in 2023; XVIII Airborne Corps fires brigade)
    18th FA Brigade is the XVIII Airborne Corps fires brigade at Fort Liberty (renamed from Fort Bragg in 2023). The brigade supports the corps' Immediate Response Force / Global Response Force posture, which means the launcher batteries are tied to a shorter-notice deployment recall window than peer launcher units. Cherry life is built around the brigade's air-deployability training, the XVIII Corps exercise rotation, the home-station live-fire cycle, and the support relationships to the 82nd ABN, the 101st AAB, and the corps' rotational assignments. The brigade culture values readiness posture and the launcher's role as the corps fires reach.
  • 41st Field Artillery Brigade HIMARS (Germany — V Corps / USAREUR-AF fires presence)
    41st FA Brigade is the V Corps fires presence in USAREUR-AF, running M142 HIMARS from a forward-stationed posture in Germany. Cherry life is built around the European exercise rotation (Saber Strike with Baltic partners, Defender Europe at brigade and corps level, JMRC rotations at Hohenfels — verify the specific exercises the brigade is running before citing), the home-station live-fire cycle at Grafenwoehr Training Area, and the partner-nation integration that comes with forward stationing. The brigade culture values combined-arms integration with NATO and partner forces; the cherry FO learns the rhythm of multinational exercises that CONUS-based peers do not see for years.
  • 75th Field Artillery Brigade M270 / M270A2 MLRS (Fort Sill, OK — III Corps-aligned)
    75th FA Brigade is the III Corps-aligned fires brigade at Fort Sill, running M270A2 MLRS (tracked, two-pod, heavier, armored) instead of the wheeled HIMARS. Cherry life is built around the M270A2's tracked-vehicle maintenance rhythm (more PMCS time, more motor-pool time, more rolling-stock readiness work than the wheeled HIMARS units), the supporting BCT structure (M270 batteries support ABCTs at Carson, Hood/Cavazos, Riley, Stewart, Bliss), and the NTC rotation cycle at Fort Irwin. The brigade culture values the tracked-vehicle gunnery cycle and the M270A2's pod-pair employment (twice the rocket count per launcher per cycle compared to HIMARS).
  • Battery FDC slot (cannon-style — the alternative seat to launcher crew for some cherries)
    A small fraction of cherry 13Ms go directly to a battery FDC slot — the Fire Direction Center inside a launcher battery's headquarters that processes fire missions, validates the safety-T card per ATP 3-09.60, and executes the fire mission against the FO's call. The FDC slot is more AFATDS-heavy than the launcher crew slot; less pod-handling, more keyboard work, more time at the battery TOC than at the firing point. Career path runs toward FDC chief at SGT/SSG rather than Section Chief / Platoon Sergeant. The same MOS, different seat — verify whether your battery slots 13Ms into the FDC or if it draws from another MOS for that role.

What Good Looks Like at This Rank

The good cherry 13M cannoneer is invisible the right way: launcher PMCS clean, pod handling smooth, fire-control panel BIT checks done at 0500 without being told, mouth shut during the OPORD brief, asking questions during the AAR instead of during the brief. He shows up to his first battery FTX with the STP 6-13M task list memorized, the platform TM read cover-to-cover for the operator-level chapters, and the section's SOP in his patrol cap. His PMCS at the motor pool is clean enough that the section chief stops checking behind him by month four. He learns the names of every senior soldier in his section by week two and the names of the platoon sergeants in the other launcher sections by month two. He brings extra batteries for the fire-control panel and the radio because he knows somebody in the section will need them. He asks the section chief the question the section chief was about to brief him on, which makes the section chief look like the smartest soldier in the conversation — and the section chief remembers it. By month nine the section chief is letting him run the gunner-position drill in training — short ones, with feedback after each. By month eighteen he is on the short list to pin SPC early, the platoon sergeant is asking what school he wants, and the battery's senior cannoneers are starting to treat him as the second-best cannoneer on the launcher instead of the new guy. By his first re-enlistment window, the section chief is having the conversation with the platoon sergeant about which school slot to push him for first (Air Assault if the supporting BCT is air-assault coded, Airborne if airborne-coded). The retention NCO has already gotten a heads-up from the section chief that this is a cannoneer worth keeping. The bad cherry 13M is the one who does not understand that being invisible is the goal. He is the cannoneer who showed up to OSUT thinking he was going to shoot rockets every week, who treats PMCS as a check-the-block event, who walks past the section chief's pre-combat ritual to chase chow, who buys gucci kit before he owns the issued kit. He is not malicious — he is just signaling that he does not yet know what game he is playing. The good cherry is the one who figured out the game in week three and started playing it the right way — and the section chief reads the difference within 30 days of the cherry signing into the battery.

Preview — The Next Rank

E-4 Specialist (or Corporal, if the chain pins you to a small leadership billet before BLC) is the next rank, and it is structurally different from the cherry tier. E-4 is the first promotion that requires the chain to actively recommend you — 24 months TIS / 6 months TIG per AR 600-8-19, but both clocks can be waived for soldiers who are visibly outperforming the section. The section chief's recommendation is what moves you from the cherry track to the SPC-and-trusted track. The job content at E-4 splits along two seats. As a Driver-track SPC, you operate the launcher truck (M142 wheeled or M270A2 tracked) on road march, emplacement, and displacement; you own the platform's PMCS and the motor-pool relationship; the section chief lets you behind the wheel on the firing-point timeline because he trusts you with the platform. As a Gunner-track SPC, you operate the launcher's fire-control panel under the section chief during the fire-mission cycle — receive the mission via AFATDS, validate the firing solution against the safety-T, monitor elevation and azimuth as the launcher lays, make the prep-to-fire call to the section chief. Both seats are the bench list for Section Chief at SGT. The Ammo Team Chief on the resupply truck is the adjacent SPC billet — the cannoneer who is more comfortable on the HEMTT-LHS than at the launcher fire-control panel often runs the ammo team for a cycle before pinning SGT and moving to a launcher. The differentiator on the SGT board is the school stack you built at SPC (Air Assault if unit-coded, Airborne if unit-coded), the BLC slot (required to pin SGT under the STEP model), and the section chief's read of whether you can be trusted with a launcher crew at SGT. Plan the BLC packet 6-12 months before your TIS hits the SGT window. The good cherry 13M becomes the good SPC by being the soldier the section chief points at when the section has a hard task — the pod handling under time pressure, the road march in the dark, the BIT-check recovery at the firing point.
FAQ

13M E1-E3 — Frequently Asked Questions

Q01What does a E1-E3 13M (Multiple Launch Rocket System (MLRS)/High Mobility Artillery Rocket System (HIMARS) Crewmember) actually do?
You came out of 13M OSUT at Fort Sill — the Field Artillery Center of Excellence — with the basics of the launcher, the pod, and the crew drill.
Q02What's the most important thing to know as a E1-E3 13M?
13M OSUT runs at Fort Sill, OK — the U.S. Army Field Artillery Center of Excellence at Snow Hall and the ranges around West Range, Henry Post, and Thompson Hill.
Q03What does a typical day look like for a E1-E3 13M?
Time-blocked day at the E1-E3 13M rank tier: 0500 Wake. Roll out of the rack. Hit the head, shave, uniform check, PT clothes on. Make the bed to the platoon SOP — the squad will fail an inspection because of you, not because of itself, 0530 PT formation. Stand at parade rest behind your section chief. Accountability check, uniform check, then to the battery PT field, 0600-0700 Battery PT. Cardio days the battery runs together (the 17th / 18th / 41st / 75th FA Brigade rhythm is similar to a line BCT — Tuesdays heavy lift, Wednesdays heavy ruck or formation run, Thursdays interval,…
Q04What mistakes get E1-E3 13M soldiers fired or relieved?
Sleeping on TSP enrollment under BRS. The 1% automatic + 4% match if you contribute 5% compounds across a 20-year career; starting at 19 vs. 26 is roughly 4x the balance at retirement; DUI / drug pop — separation under AR 635-200 ch. 14, an RE code that follows you out the gate, and a sensitive-billet history (you signed for fire-control components, SKL fill devices, encrypted radios, and launcher-mounted sensitive items) that the chain has to write up before separation;…
Q05What career decisions matter most at the E1-E3 13M rank tier?
TSP enrollment under the Blended Retirement System (BRS) — Everyone enlisted after January 2018 is on BRS by default. The government matches 1% automatically and adds up to 4% more if you contribute 5% of base pay. At E-1 base pay (~$2,100/mo in 2026 — verify the current pay table on the DoD military pay site before quoting), 5% is roughly $105/month — most cherries say they cannot afford it, but they spend more than that on the on-post fast food rotation and the barracks streaming subscriptions. The math is unforgiving: starting TSP at 19 with 5% contribution + 5% match,…
Q06What's next after E1-E3 for a 13M (Multiple Launch Rocket System (MLRS)/High Mobility Artillery Rocket System (HIMARS) Crewmember) in the Army?
E-4 Specialist (or Corporal, if the chain pins you to a small leadership billet before BLC) is the next rank, and it is structurally different from the cherry tier.
Q07What manuals and regulations does a E1-E3 13M need to know cold?
STP 6-13M — Soldier's Manual and Trainer's Guide, MOS 13M (the task standard for every cannoneer skill).; ATP 3-09.60 — Multiple Launch Rocket System and HIMARS Operations.; FM 3-09 — Field Artillery Operations.

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