1371 Combat Engineer

The section gets the order to breach a wire obstacle. You and your partner low-crawl to the concertina, bolt cutters in hand. You cut the bottom strands while he lifts the wire. Your NCO marks the lane with a VS-17 panel. Infantry flows through thirty seconds later. The whole thing takes less than two minutes. Two minutes you spent on your stomach in the dirt, focused, hands moving, thinking about nothing except the wire and the lane.

That is the 1371 Combat Engineer. Technical skill, physical grit, and proximity to the fight. If you want the most field-forward work in OccFld 13, this is the path.

Job Role and Responsibilities

The 1371 Combat Engineer executes the four traditional engineer missions in direct support of Marine maneuver forces: mobility, counter-mobility, survivability, and general engineering. Marines in this MOS perform demolitions, obstacle breaching, minefield emplacement and clearance, field construction, and route-clearance tasks that keep Marine units moving and protected. The MOS combines technical training in explosives and construction with the physical demands and operational pace of field-forward engineer work.

No two training days look exactly the same, but the range of tasks you cycle through is consistent:

• Emplacing and detonating demolition charges to breach obstacles, clear routes, or destroy equipment
• Constructing and emplacing obstacle systems including wire, mines, and anti-armor barriers
• Performing mine and IED clearance procedures in support of route and area clearance operations
• Building field fortifications, fighting positions, and survivability works for supported units
• Constructing and maintaining roads, landing zones, and field drainage systems
• Operating engineer equipment at the operator level in support of construction tasks
• Conducting bridge reconnaissance and supporting gap-crossing operations
• Supporting combat outpost construction and hardened position development

Specific Roles and Related Codes

Senior 1371 NCOs serve as section leaders, platoon sergeants, company gunnery sergeants, and training NCOs. At Sergeant and above, the shift from executing tasks to supervising explosive and obstacle operations is significant. A Sergeant who signs the range safety brief owns the procedural compliance of every Marine on that range. That accountability is real and non-transferable.

Mission Contribution

Combat engineers shape the ground the maneuver force operates on. Mobility tasks determine whether the infantry or armor unit can advance on a given axis. Counter-mobility tasks slow the enemy’s ability to move and reinforce. Survivability tasks keep Marines alive in fixed positions by building fighting positions, berms, and hardened structures that absorb direct fire and indirect fire effects. General engineering keeps supply routes, landing zones, and base infrastructure functional.

These missions are not administrative in nature. They have immediate, visible consequences for operational outcomes. When a combat engineer team breeches a minefield lane, the infantry unit that crosses it owes that Marine their ability to maneuver. That is not a metaphor. It is a physical reality.

Technology and Equipment

1371 Marines work with a range of materials and equipment across all four engineer missions:

• Military explosives: C-4, TNT, detonating cord, blasting caps, time fuze, and military demolition accessories
• Mine detectors and electronic countermeasure equipment for IED and mine work
• Assault breaching equipment including mine rollers and the M58 Mine Clearing Line Charge (MICLIC)
• Combat engineering hand tools: bolt cutters, picks, shovels, entrenching tools, and wire cutting equipment
• Engineer equipment operated at the operator level: dozers, loaders, and excavators as assigned by the unit
• Bridging components and gap-crossing equipment as required by the unit mission
• PPE specific to demolitions and IED work including blast-protective equipment

Senior NCOs and demolitions-qualified Marines carry additional safety supervisory responsibilities for all explosive operations.

Salary and Benefits

Financial Benefits

All Marine enlisted pay is governed by the 2026 DFAS basic pay tables. The table below shows monthly base pay at common grades for this MOS.

Source: DFAS 2026 pay tables. Figures reflect the 2026 pay raise.

On top of base pay:

• Basic Allowance for Housing (BAH): Varies by installation, pay grade, and dependent status. Combat engineer units concentrate at Camp Lejeune (2nd CEB) and Camp Pendleton (1st CEB). Use the DoD BAH Rate Lookup tool for current rates at your expected duty station.
• Basic Allowance for Subsistence (BAS): $476.95 per month for enlisted Marines (2026 rate).
• Demolition Pay: Qualified demolitions Marines may be eligible for hazardous duty incentive pay. Confirm current eligibility and rates through your unit administrative section. This is subject to change and varies by billet assignment.

Additional Benefits

Active-duty Marines receive TRICARE Prime at no enrollment cost, no deductible, and no copay for in-network care. Coverage includes medical, dental, vision, mental health, prescriptions, and hospitalization for the Marine and eligible family members.

Education benefits during active service include up to $4,500 per year in Marine Corps Tuition Assistance. Post-service Post-9/11 GI Bill benefits cover full in-state tuition at public schools or up to $29,920.95 per year at private institutions (AY 2025-2026 cap), plus a monthly housing allowance and up to $1,000 per year in book stipends. Construction management, civil engineering technology, and project management programs pair well with the 1371 background and are strong GI Bill targets.

Retirement under the Blended Retirement System (BRS) pays 40% of the high-36 average basic pay as a defined-benefit pension at 20 years of service, plus TSP matching of up to 5% of basic pay starting in year three.

Work-Life Balance

Marines earn 30 days of paid leave per year, accruing 2.5 days per month with a maximum 60-day carryover. Combat engineer units train frequently in the field, which means the gap between garrison tempo and deployment tempo is smaller than in support MOSs. The months before a MEU float or combined arms exercise are consistently demanding: long days, weekend work, and compressed personal time. Plan your leave budget around the unit training calendar rather than assuming steady availability.

Qualifications and Eligibility

Basic Qualifications

The MM (Mechanical Maintenance) composite is the primary gate score for 1371. It draws from Arithmetic Reasoning (AR), Mechanical Comprehension (MC), Auto and Shop Information (AS), and Electronics Information (EI). Prepare specifically for those four subtests using the ASVAB guide or PiCAT guide.

GT scores above 100 also matter for promotion and for competitive assignment and schooling selection throughout your career.

Application Process

1. Contact a Marine Corps recruiter at your nearest Recruiting Station (RSS) or through marines.com.
2. Take the ASVAB or PiCAT. Your MM composite needs to meet the 1371 threshold.
3. Complete MEPS processing, including the full medical examination and physical standards verification.
4. Work with your recruiter to identify available 1371 or OccFld 13 contracts.
5. Sign your enlistment contract with your ship date to Boot Camp.

This is not a competitive scoring process like officer commissioning. Meeting the minimum standards and clearing MEPS is the gate. Contract availability and timing are the variables.

Selection Criteria and Competitiveness

1371 is a steady-demand MOS because engineer battalions require a constant pipeline of combat engineers. This is not a prestige bottleneck with a limited number of seats, but the physical and safety standards are real. Marines who arrive at MOS School in strong physical condition and with some prior exposure to construction, outdoor work, or hands-on mechanical environments tend to perform better in the schoolhouse and earn trust faster at the first unit.

Upon Accession

Marines enter service at Private (E-1). The standard initial active enlistment is four years. After completing Boot Camp and MOS School, you receive your first unit assignment and begin building the fleet experience that turns schoolhouse training into real competence.

Work Environment

Setting and Schedule

Combat engineers spend more time in the field than most non-combat MOS Marines. In garrison, the unit operates on a structured daily schedule that includes physical training, equipment maintenance, administrative work, and unit-level training. Field exercises pull the unit out for days or weeks at a time, and the pre-deployment pipeline before a MEU float can compress into an intense period of continuous training events.

The work environment is physical and outdoors-oriented regardless of the weather. Combat engineer tasks happen when the mission requires them, not when conditions are comfortable.

Leadership and Communication

The chain of command runs from the Marine through the engineer team leader, section leader, platoon commander, and up through the engineer battalion. Communication on demolitions and obstacle operations requires precise, unambiguous language because errors in explosive operations have irreversible consequences. A misunderstood command during a demolitions operation is not a correctable mistake.

Performance is tracked through proficiency and conduct marks for junior Marines and FITREPs for Staff NCOs. Demolitions safety record and training qualification currency are specifically relevant to performance records in this MOS. A career-ending safety incident removes everything else from the conversation.

Team Dynamics and Autonomy

Combat engineer tasks are almost always team efforts. Demolitions charges require at least one qualified supervisor and one or more assistants. Obstacle emplacement requires coordinated section movement. Breaching operations require precise crew drills that have been rehearsed to the point of automaticity.

Junior Marines follow section leader direction closely, particularly on explosive operations. Senior Marines develop the judgment to recognize when safety conditions are not met and to stop operations under time pressure. That is the harder skill and the one that defines a mature combat engineer NCO.

Job Satisfaction and Retention

Marines who want the field-forward engineer identity tend to report high satisfaction in 1371. The combination of technical skill and physical demand, the proximity to maneuver forces, and the operational relevance of the mission create a sense of purpose that support-track engineers sometimes describe as missing in their own work. The challenge is that the sustained field demands and deployment frequency create a work-life dynamic that does not suit every Marine long-term. The job is genuinely demanding, and that demand does not diminish as you gain rank. It increases.

Training and Skill Development

Initial Training

Total pipeline from enlistment to first fleet assignment runs approximately six to eight months.

At MOS School, 1371 students learn:

• Military explosives theory: properties of C-4, TNT, detonating cord, and demolition accessories
• Charge calculation and placement for breaching, cratering, cutting, and destruction missions
• Detonating cord, blasting cap, time fuze, and electric firing system procedures
• Mine recognition, emplacement, and basic clearance procedures
• Obstacle construction: wire, anti-tank ditches, abatis, and barrier systems
• Field fortification construction and survivability work
• Bridging concepts and gap-crossing support procedures

The schoolhouse teaches the foundation. Proficiency comes from repetition: demolitions ranges, field exercises, and deployment preparation pipelines at the first unit.

Advanced Training

Fleet experience builds the competence that MOS School starts. After arriving at the first unit, 1371 Marines cycle through qualification ranges, combined arms training events, and the deployment preparation pipeline.

Advanced training opportunities include:

• Sapper Leader Course at Fort Leonard Wood: competitive, available to junior and mid-grade NCOs, covers advanced demolitions and small-unit tactics
• Explosive Hazard Awareness and route clearance qualification courses
• Breacher certifications on specific assault systems
• Bridge Leader training for NCOs assigned to bridge platoons
• Technical training on new obstacle and breaching systems as they enter the fleet

Senior NCOs attend leadership and quality-assurance courses tied to their rank-appropriate billets.

Career Progression and Advancement

Career Path

The Sergeant transition is the most significant inflection point in the 1371 career. At E-5, you shift from executing tasks to supervising explosive and obstacle operations with full safety accountability. That accountability is not shared. It belongs to you. A Sergeant who signs off on a demolitions qualification range is professionally responsible for every Marine’s procedural compliance on that range.

Role Flexibility and Transfers

1371 Marines can apply for lateral moves within OccFld 13 to 1341 or 1345 through the LATMOVE program, subject to unit release and manpower approval. The shared engineer knowledge base makes intra-field moves more natural than cross-field transitions.

Moves outside OccFld 13 are available through competitive LATMOVE applications. The combat engineer background is relevant to EOD-adjacent preparation, reconnaissance pipelines, and various specialized pathways for motivated Marines.

Performance Evaluation

Junior Marines receive proficiency and conduct marks from their section leader. E-5 and above receive FITREPs. Combat engineers who build records of strong demolitions safety compliance, current training qualifications, field competence, and consistent development of junior Marines produce competitive evaluations. A safety failure in explosive operations is a career-defining event regardless of how strong everything else in the record is. This MOS has a higher consequence floor than most.

Physical Demands and Medical Evaluations

Physical Requirements

1371 carries one of the higher physical demand profiles across OccFld 13. The daily field work involves carrying engineer loads, digging obstacles, and operating in protective gear through physical conditions that drain you faster than garrison work. During demolitions training and obstacle emplacement, you are low-crawling, digging, lifting, and moving under time pressure.

Common physical demands on a working day in the field:

• Carrying engineer equipment, demolitions materials, and individual combat load over extended distances on foot
• Digging fighting positions, obstacle systems, and drainage features by hand
• Loading, positioning, and initiating demolition charges in conditions that may include night, rain, or cold
• Lifting and positioning heavy bridging components and obstacle materials
• Operating in full protective equipment including body armor during field operations

Garrison days are more moderate. The field pace and deployment tempo are where the physical demand stays consistently high.

PFT and CFT Standards

All active-duty Marines must pass the Physical Fitness Test (PFT) and Combat Fitness Test (CFT) semiannually. The table below shows minimum passing and first-class scores for the 17-20 age group.

Verify current standards at marines.mil before any training or accession decision.

Medical Evaluations

Annual medical readiness screenings apply to all active-duty Marines. Marines qualified in demolitions operations have periodic qualification checks tied to currency requirements. The Marine Corps has expanded blast exposure awareness and monitoring programs in recent years, and Marines in this MOS accumulate blast exposure during demolitions training ranges over a career. Annual physicals include relevant occupational health screening. Maintain your medical records carefully throughout your time in 1371.

Deployment and Duty Stations

Deployment Details

1371 Marines deploy at rates that are higher than many support MOS fields because engineer support to maneuver forces is a continuous requirement. MEU rotations typically run six to seven months. Combined arms exercises and bilateral training events add additional shorter deployments throughout the non-MEU years.

Combat engineers have historically deployed to a wide range of environments, from ship-based MEU rotations in the Pacific and Atlantic to named operations ashore. The current Marine Corps direction toward distributed maritime operations and expeditionary advanced base operations maintains a consistent demand for the four engineer missions: mobility, counter-mobility, survivability, and general engineering, across the deployment enterprise.

Location Flexibility

The primary installations for 1371 Marines track the combat engineer battalion structure:

• Camp Lejeune, North Carolina: 2nd Combat Engineer Battalion (2nd CEB), II MEF, 2nd Marine Division
• Camp Pendleton, California: 1st Combat Engineer Battalion (1st CEB), I MEF, 1st Marine Division
• MCAGCC Twentynine Palms, California: training center with engineer presence; combat engineers rotate through regularly for Combined Arms Exercises
• Okinawa, Japan: III Marine Expeditionary Force, 3rd Marine Division forward-deployed engineer support

First-duty-station assignments fill unit billets based on Marine Corps needs. Marines can submit preferences, and subsequent assignments incorporate those preferences alongside unit requirements.

Risk, Safety, and Legal Considerations

Job Hazards

The 1371 MOS carries serious and specific hazards that are managed but not eliminated:

• Explosive materials: malfunction, premature initiation, and sympathetic detonation are real risks even with correct procedures
• Unexploded ordnance (UXO): encountered during training ranges and operational areas; recognition and avoidance are trained skills that matter
• Minefield operations: live and training mines during emplacement and clearance exercises
• IED exposure: route clearance and area clearance operations in training and deployed environments
• Electric firing systems: high-voltage electricity from improvised and military electric initiators during demolitions operations
• Heavy equipment proximity hazards during construction tasks
• Physical injury from obstacle construction and field engineering work under time pressure

These hazards are managed through rigorous procedural compliance. Cutting corners on explosive safety procedures is not a calculated risk. It is the scenario that produces injuries and fatalities.

Safety Protocols

Every live demolitions operation requires a range safety officer, a qualified demolitions supervisor, and officer-in-charge oversight per Marine Corps explosives safety publications and unit SOPs. Documentation requirements for demolitions operations are extensive and reviewed at command level. Marines who shortcut procedures face administrative and punitive action regardless of rank or outcome.

The Marine Corps has increased blast exposure awareness and monitoring in recent years in response to research on cumulative TBI risk from training explosions. 1371 Marines should understand that repetitive blast exposure from demolitions training is a documented occupational health concern, and that awareness is now part of the institutional culture in engineer units.

Security and Legal Requirements

The basic 1371 MOS does not require a security clearance. Some specialized training pathways and unit assignments may trigger a Secret clearance requirement. Standard UCMJ obligations apply. The enlistment contract specifies the four-year initial service obligation and the legal framework governing service.

Impact on Family and Personal Life

Family Considerations

Family life in a combat engineer unit runs on a demanding cycle. Pre-deployment training periods and the deployment itself create real separation. At Camp Lejeune, the Jacksonville area provides affordable housing and a well-established military family community built around the base cycle. The 2nd CEB and 8th ESB family readiness programs give families a network of people going through the same experience.

At Camp Pendleton, families have access to the broader San Diego and Oceanside metro, which offers more spouse employment options but higher housing costs. Twentynine Palms assignments are more isolated but build close community bonds within the unit.

Marine Corps Community Services (MCCS), Military OneSource, and the Marine Corps Family Team Building program provide family support resources at all major installations. The battalion Family Readiness Officer (FRO) is the unit-level contact for family support during training and deployment. Engineer unit deployment and exercise cycles are somewhat predictable in advance, which gives families the ability to plan around known separation timelines rather than reacting to short-notice events.

The field tempo in 1371 means that Marines in this MOS often work longer and harder in the months before exercises and deployments than the official garrison schedule reflects. Families who understand that cycle plan better than those who assume the garrison schedule represents actual availability.

Relocation and Flexibility

Regular PCS moves every two to four years are the norm. The Marine Corps funds PCS moves, but the disruption to family employment, schooling, and community ties is real. The concentration of combat engineer units at Camp Lejeune and Camp Pendleton means many first-term and mid-career Marines cycle between those two installations, which provides some assignment predictability.

Marine Corps Reserve

Component Availability

The 1371 MOS is available in the Marine Corps Reserve. Reserve combat engineer units exist at several reserve centers across the country, though billet availability for 1371 depends on the specific unit and reserve center location nearest you.

Drill Schedule and Training Commitment

The standard reserve commitment is one weekend per month plus two weeks of Annual Training per year. For 1371 Reserve Marines, drill weekends involve demolitions refresher training, equipment maintenance, physical fitness, and unit readiness preparation. Annual Training for reserve combat engineer units typically includes field exercises with actual demolitions operations and engineering tasks in a realistic environment.

Additional days may be required for demolitions qualification currency, range certifications, and pre-deployment training if the unit is scheduled for mobilization.

Part-Time Pay

An E-4 Corporal drilling with the reserve earns approximately four periods of pay per drill weekend. At 2026 E-4 rates, that works out to roughly $419-$509 per weekend depending on years of service. Active-duty E-4 monthly base pay of $3,142.20 to $3,815.40 is the comparison baseline.

Benefits Differences

Deployment and Mobilization

Reserve combat engineer units have mobilized for contingency operations, named exercises, and theater security cooperation missions at varying rates. The consistent demand for engineer capability across the joint force means 1371 reservists are among the reserve Marines more likely to receive mobilization orders during periods of elevated operational tempo. Mobilization periods typically run six to twelve months. USERRA protections require civilian employers to maintain the position and restore seniority during military service.

Civilian Career Integration

Combat engineer experience transfers to construction, government contracting, project supervision, and DoD-adjacent contractor positions. The reserve weekend-and-two-weeks commitment is generally compatible with construction and government contracting employment. Civilian employers in construction and defense contracting tend to understand the 1371 background better than employers in unrelated sectors. The skills are recognizable without translation.

Post-Service Opportunities

Transition to Civilian Life

Combat engineer experience has real civilian value, though it requires more active translation than equipment operator or mechanic MOS paths. The skill set includes practical construction methods, explosives safety oversight, obstacle and breaching procedures, field project management, and the ability to execute technical tasks under operational pressure. Those skills connect to construction management, government contracting, public works, and project supervision roles.

The Transition Readiness Program (TRP) provides pre-separation workshops and employment resources. Marines who pair 1371 service with post-service education in construction management, civil engineering technology, or a related field give civilian employers a recognizable credential alongside the military background.

DoD contractor positions and government civilian roles offer the most direct transfer because the engineer background is understood without the translation burden it carries in purely commercial environments.

Civilian Career Prospects

Sources: Bureau of Labor Statistics Occupational Outlook Handbook (bls.gov). Figures are national medians. Construction management and DoD contractor roles at the upper end of the table typically require post-service education or significant documented experience. Marines who use GI Bill benefits for construction management programs often access those upper-range roles more quickly than those who transition without additional credentials.

Is This a Good Job for You? The Right (and Wrong) Fit

Ideal Candidate Profile

1371 fits Marines who:

• Want the engineer mission specifically and are drawn to the field-forward, operational side of it
• Are physically fit and want a career that stays physically demanding throughout service
• Have genuine interest in the technical side: demolitions theory, obstacle systems, construction methods
• Can work precisely under pressure, because errors in explosive operations are not recoverable
• Want proximity to maneuver forces and the tactical context that comes with it

The clearest signal that 1371 is the right choice is wanting the combat-engineer identity specifically: not engineering in general, but the demolitions, the breaching, the obstacle work, and the field pace. Marines who picture the job as “doing construction” in a general sense or as a path toward civilian trades will find the field demands and the demolitions safety accountability different from what they imagined. Marines who want the maintenance path should look at 1341. Marines who want the equipment-operation path should look at 1345.

Potential Challenges

The field demands are real and sustained. Extended field time, physical strain, and operational deployment pace are features of this MOS, not temporary phases. The demolitions safety accountability that comes with rank adds a layer of professional weight that some Marines underestimate when they enlist as junior Marines. The moment you put on Sergeant, you are the adult in the room on every explosive operation your section executes.

Civilian transfer requires more explanation than operator or mechanic paths. The 1371 title does not map directly onto a civilian job description the way heavy-equipment operator does. Plan for that gap with post-service education or training.

Career and Lifestyle Alignment

This is the right choice for Marines who want the field-engineer identity and are willing to invest in post-service education to make those skills competitive in the civilian construction and contracting market. The active-duty career builds technical competence and leadership skills that are genuinely valuable. The GI Bill funds the education that makes those skills marketable at the level the experience deserves.

Marines who want the trade-focused civilian transfer path with a cleaner transition should look at 1341 Engineer Equipment Mechanic and 1345 Engineer Equipment Operator.

This site is not affiliated with the U.S. Marine Corps or any government agency. Verify all information with official Marine Corps sources before making enlistment or career decisions.

More Information

Contact a Marine Corps recruiter at your local Recruiting Station (RSS) or visit marines.com to confirm current billet availability, verify the 1371 MOS training timeline, and understand your enlistment options. Your recruiter can confirm current ASVAB requirements and which OccFld 13 contracts are available in your enlistment window.

Explore more OccFld 13 Engineer, Construction, Facilities, and Equipment careers such as 1341 Engineer Equipment Mechanic and 1345 Engineer Equipment Operator.

Need score context? Review the ASVAB guide and the PiCAT guide before publishing permanent MOS content.