5805 Criminal Investigation Officer

The 5805 Criminal Investigation Officer is the Marine Corps’ technical authority for criminal investigative operations. Selected exclusively from experienced enlisted CID Marines, this warrant officer MOS exists for investigators who want to stay in the investigative mission while stepping into senior technical leadership. You supervise criminal investigations, manage CID programs, and advise commanders on investigative matters at the expert level. This is not a shortcut into CID. It is a progression route for Marines who already carry strong professional trust inside the law enforcement and investigative community. If you need to improve your GT score before applying, structured ASVAB preparation can help you reach the required threshold.

Job Role and Responsibilities

A 5805 Criminal Investigation Officer leads criminal investigative operations within the Marine Corps law enforcement community. The role encompasses supervising CID agents, managing criminal investigations, coordinating with federal and military law enforcement agencies, and advising commanders on investigative matters and criminal justice procedures across the full spectrum of Marine Corps law enforcement operations.

The 5805 operates at the intersection of hands-on case management and staff-level investigative advisory work. At the CWO2 and CWO3 levels, the job is hands-on and case-driven. You oversee active criminal investigations, review case files, ensure investigative procedures comply with the Uniform Code of Military Justice and federal law enforcement standards, and coordinate with the Naval Criminal Investigative Service and other federal agencies. At the CWO4 and CWO5 levels, the role expands to program management at the regiment, MEF, or force level. You are responsible for investigative policy, training standards, interagency coordination, and the overall health of the Marine criminal investigation program.

This MOS differs from both the enlisted CID agents who conduct individual investigations and the commissioned officers who command law enforcement battalions. The 5805 is the bridge between those two worlds, translating investigative requirements and criminal justice procedures into useful guidance for commanders while maintaining deep hands-on competence in case management and investigative techniques.

MOS Designations

Mission Contribution

The 5805 contributes directly to the Marine Corps justice system and force discipline through professional criminal investigation. Within the MAGTF, the warrant officer serves as the commander’s technical advisor on all criminal investigative matters. This includes investigative policy, complex case oversight, interagency coordination, and criminal justice procedure development. The warrant officer functions as the critical link between enlisted CID agents who execute investigations and commissioned officers who make command decisions based on investigative findings and criminal justice requirements.

Technology, Equipment, and Systems

The 5805 manages investigative systems including case management databases, digital forensics platforms, evidence tracking systems, and criminal intelligence networks. The warrant officer is responsible for investigative standards, evidence handling procedures, and the integration of criminal investigation capabilities into unit operational plans. Diagnostic and planning tools include joint criminal investigation information systems, Marine Corps law enforcement databases, and MAGTF-level investigative planning platforms.

Salary and Benefits

Financial Benefits

Warrant officer base pay is determined by the DFAS pay table. All Marine warrant officers enter from the enlisted ranks with significant time in service, so their years of service for pay purposes are higher than a brand-new W-1. The table below shows realistic pay points based on typical career progression.

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

Criminal Investigation Officers do not receive aviation flight pay. Hazardous duty pay may apply depending on specific assignments involving high-risk investigative operations. Special duty assignment pay is not typically associated with this MOS. Accession and retention bonuses for warrant officers vary by year and are announced via MARADMIN. Check the current board message for any bonus programs applicable to the 58 field.

Additional Benefits

Warrant officers receive full healthcare coverage through TRICARE Prime with zero enrollment fees and zero copays for active-duty members. Housing allowance uses the officer BAH rate, which is higher than the enlisted rate. The Post-9/11 GI Bill provides up to $29,920.95 per year for private school tuition, full in-state tuition at public schools, a monthly housing allowance based on the E-5 with dependents rate at the school ZIP code, and an annual book stipend of $1,000.

The Blended Retirement System provides a pension of 40 percent of the high-36 average basic pay at 20 years of service. The Thrift Savings Plan includes automatic 1 percent government contribution and matching up to 4 percent of basic pay, for a total maximum government contribution of 5 percent. Many 5805s serve 20 to 30 plus years total when combining enlisted and warrant time, building substantial retirement benefits.

Work-Life Balance

Warrant officers earn 30 days of leave per year, accruing 2.5 days per month with a maximum carryover of 60 days. In garrison, the work follows a case-driven schedule with investigations progressing through standard procedures. The CID field requires patience, thoroughness, and the ability to manage sensitive information. During deployment or in contingency operations, the tempo increases as investigative requirements expand to include theater-specific criminal activity and joint investigative missions. The warrant officer lifestyle offers more technical focus and less staff grind than commissioned officers, while providing more autonomy than senior SNCOs.

Qualifications and Eligibility

Appointment Path

Marine Corps warrant officers are selected exclusively from the enlisted ranks. There is no civilian-to-warrant or street-to-seat path in the Marine Corps. The 5805 Criminal Investigation Officer requires prior investigative or CID-related experience and typically draws from Marines already serving in the investigative side of the 58 field. The baseline requirement is Staff Sergeant (E-6) or above in a qualifying feeder MOS, though specific requirements vary by MARADMIN and MOS proponent guidance.

Selection Board Process

Warrant officer selection is announced annually via MARADMIN. The timeline typically opens in the fall with package deadlines in the winter or early spring. Marines should begin preparing at least six months before the deadline.

The package requires command endorsements through the chain of command to the first general officer. For CID Marines, endorsements typically come from the law enforcement battalion commanding officer and potentially the MEF or installation commander. Each level evaluates your investigative credibility and professional standing.

Your personal essay should address your specific experience in criminal investigations, the types of cases you have handled, the investigative programs you have managed, and why you want to serve as a warrant officer in the 58 field. The board wants evidence of investigative competence and professional judgment.

Supporting records include fitness reports, CID qualifications, federal law enforcement training certificates, professional military education, and awards related to investigative excellence. Marines who have served as CID team leaders, special agents in charge, or investigative training NCOs should document those assignments clearly.

Selection for the 5805 is competitive. Demonstrated investigative competence and professional integrity are the primary differentiators. A strong package includes a clean screening record, consistent superior fitness reports, completed PME, and documented leadership in CID-specific assignments.

Test Requirements

The warrant officer program requires a minimum GT score as published in the current MARADMIN board message. A strong GT score demonstrates the cognitive aptitude needed for warrant-level investigative analysis and advisory work. If your current GT score needs improvement, structured study through ASVAB preparation resources can help raise your score before the board convenes.

Upon Appointment

Newly selected 5805s enter at the W-1 (Warrant Officer 1) grade. Upon promotion to CW2, warrant officers receive a commission. The Minimum Service Requirement upon appointment is established by the MOS proponent and the current MARADMIN. Selected Marines then complete the Warrant Officer Basic Course followed by investigative community-specific education.

Work Environment

Setting and Schedule

The 5805 works across multiple environments. Law enforcement battalion billets place you in the operational CID environment where investigations cover the full range of criminal activity within the Marine Corps. Joint billets place 5805s in multi-agency investigative task forces where the scope includes federal crimes, counterintelligence matters, and joint criminal investigations. Training billets place 5805s at locations where they develop CID training curricula and serve as instructors. MEF billets place 5805s at the staff level where they serve as criminal investigation advisors.

In garrison, the schedule follows case-driven investigative work with investigations progressing through standard procedures. During deployment or in contingency operations, the tempo increases as investigative requirements expand to include theater-specific criminal activity and joint investigative missions.

Position in the Unit

Marine warrant officers occupy a unique position. They are technical advisors to commanders, not in the traditional command chain. The 5805 sits alongside the unit staff as the criminal investigation subject-matter expert. The relationship with the commander is advisory. The warrant officer provides technical analysis and recommendations on investigative matters and criminal justice procedures, and the commander makes operational decisions based on that input.

The relationship with senior SNCOs is collaborative. The 5805 and the senior enlisted CID Marine work together to ensure the unit’s investigative posture is sound. The warrant officer brings the technical authority, while the SNCO brings enlisted leadership and execution expertise. The relationship with junior Marines in the CID field is mentorship-focused. The warrant officer guides investigative development and validates investigative actions.

Technical vs. Staff Roles

At WO1 and CWO2, the role is predominantly hands-on. You are overseeing active criminal investigations, reviewing case files, and ensuring investigative procedures comply with legal standards. At CWO3, the balance shifts toward section-level management and MEF-level advisory work. At CWO4 and CWO5, the role becomes primarily staff-focused, involving policy development, program management, and force-level technical guidance. The progression moves from case manager to advisor to strategic-level investigative authority.

Job Satisfaction and Retention

The 5805 community has strong retention among Marines who value technical depth over generalist career progression. Warrant officers in this MOS report high job satisfaction because they stay close to the investigative mission they trained for as enlisted Marines. Common reasons for staying include the technical focus, the reduced bureaucracy compared to commissioned officer career paths, and the professional maturity that comes with managing complex criminal investigations. Some warrant officers leave due to limited promotion speed to CW5 or the civilian pay gap in federal law enforcement sectors.

Training and Skill Development

Warrant Officer Basic Course

WOBC at MCB Quantico provides the foundation for warrant officer service. The curriculum covers warrant officer leadership, Marine Corps organization at the MAGTF level, and the technical advisory skills needed at the warrant level. For 5805s, WOBC is followed by investigative community-specific education that covers advanced criminal investigation techniques, case management, and investigative policy.

WOBC differs from enlisted MOS school in its focus on leadership and advisory skills rather than individual task proficiency. It differs from officer TBS in its technical specialization rather than generalist command preparation.

Warrant Officer Career Course

The Warrant Officer Career Course is typically attended as a CW2 or CW3. The course covers advanced technical skills in criminal investigation, leadership at higher echelons, and program management. It prepares warrant officers for section chief and MEF-level advisory billets in the CID community.

Warrant Officer Intermediate Level Education

Intermediate level education is typically attended as a CW3 or CW4. The format may be resident, non-resident, or blended depending on current Marine Corps Training and Education Command offerings. The curriculum broadens the warrant officer beyond the technical lane, covering joint operations, MAGTF-level advisory skills, and strategic-level thinking. This education prepares 5805s for CWO4 and CWO5 billets at the force and Marine Forces level.

Warrant Officer Senior Service Education

Senior service education is typically attended as a senior CW4 or CW5 candidate. The curriculum covers force-level strategy, joint and interagency coordination, and senior technical advisory skills. This education prepares 5805s for the most senior billets in the criminal investigation community.

Additional Schools and Training

The 5805 may attend specialized schools including CID instructor qualification courses, joint investigative task force training programs, digital forensics certifications, and federal law enforcement training center courses. Marine Corps COOL (Credentialing Opportunities On-Line) funds civilian certifications relevant to criminal investigation, including certified fraud examiner, digital forensics analyst, and criminal justice management credentials. Tuition Assistance provides up to $4,500 per year for degree completion programs, with a cap of $250 per semester hour.

Career Progression and Advancement

Career Path

Key assignments for progression include technical leader at the law enforcement battalion level, section chief at the regiment level, force-level CID program manager, and joint investigative task force advisor. Each assignment builds the technical credibility and leadership record needed for the next board.

Promotion System

Promotion from W-1 to W-2 is time-based after successful completion of WOBC. Promotions to CW3, CW4, and CW5 are board-selected. The board evaluates fitness reports, technical competence, leadership potential, professional military education, and career trajectory. Marine warrant officers receive fitness reports using the same reporting system as commissioned officers.

Promotion to CW5 is highly competitive. The criminal investigation community has very limited CW5 billets. A competitive record includes superior fitness reports, successful completion of all required PME, documented technical contributions to the CID community, and experience at multiple echelons from battalion to force level.

CW5 as Senior Technical Advisor

A CW5 5805 serves as the senior technical advisor for criminal investigation at the force or Marine Forces level. The role involves force-wide investigative policy, interagency coordination, strategic-level technical guidance, and coordination with federal law enforcement authorities. The CW5 does not hold command authority in the traditional sense but serves as the recognized master of the criminal investigation craft across the entire Marine Corps.

To build a competitive record, focus on technical excellence in every assignment, seek out challenging CID billets, complete all required PME on schedule, pursue civilian education and certifications, and document your contributions to the investigative community through fitness reports and awards.

Physical Demands and Medical Evaluations

Physical Requirements

Warrant officers take the same Physical Fitness Test and Combat Fitness Test as all Marines. The 5805 must maintain physical readiness standards regardless of technical specialty. CID work adds physical demands beyond the standard fitness tests. Conducting field investigations, executing search warrants, and responding to crime scenes require baseline fitness and physical capability. The warrant officer must be physically capable of performing alongside enlisted CID agents in field and operational conditions.

Physical Fitness Standards

MOS-Specific Medical

The 5805 requires standard Marine Corps medical screening. CID work may involve stressful situations and exposure to crime scenes, so general physical and mental health standards apply. Medical evaluations are renewed annually as part of the standard Marine Corps medical readiness process. Any condition that prevents performance in an investigative field environment may be disqualifying for operational CID billets.

Deployment and Duty Stations

Deployment Details

Criminal investigation warrant officers may deploy as part of Marine expeditionary units or joint task forces that require investigative support. Deployment scenarios include supporting criminal investigations in theater, conducting counterintelligence investigations, and providing investigative expertise to joint operations. The standard MEU deployment runs approximately seven months.

The operational tempo for CID Marines varies with the caseload and the operational environment. In garrison, the work follows a case-driven schedule. During deployment or in contingency operations, the tempo increases as investigative requirements expand. Warrant officer deployments differ from enlisted deployments in the scope of responsibility. The 5805 manages the entire investigative program for the deployed unit rather than executing individual investigations.

Duty Station Options

Primary installations for 5805s include Camp Pendleton, Camp Lejeune, Quantico, and overseas locations such as Okinawa and Hawaii. Warrant officer duty station assignments are determined through the Marine Corps manpower management system, which considers unit vacancies, MOS requirements, and individual preferences. The 5805 community is small, so duty station options are more limited than for larger MOS communities. Naval Criminal Investigative Service joint billets place 5805s in collaborative environments at NCIS field offices and joint investigative task force locations.

Risk, Safety, and Legal Considerations

Job Hazards

The 5805 faces hazards inherent to criminal investigative work. Conducting field investigations, executing search warrants, and managing crime scenes all carry risk. The warrant officer works in environments where physical confrontation and exposure to hazardous evidence are possible. Compared to enlisted CID agents, the warrant officer has more oversight responsibility and less direct exposure to the most hazardous daily investigative tasks. Compared to commissioned officers, the warrant officer is closer to the investigative operations and the associated risks.

Safety Protocols

The 5805 employs operational risk management frameworks in all investigative operations. This includes ORM assessments before field investigations, safety inspections of investigative equipment, and adherence to Marine Corps law enforcement regulations. The warrant officer is responsible for ensuring that all investigative operations within the unit comply with Marine Corps standards and federal law enforcement protocols.

Authority and Responsibility

The 5805 holds technical authority over criminal investigative operations within the assigned unit. This includes the authority to recommend investigative procedures, validate CID readiness, and advise the commander on criminal justice matters. The warrant officer operates under the UCMJ and is subject to the same legal standards as all Marine officers. Investigative failures or procedural violations can have serious consequences for case integrity and justice outcomes. The warrant officer is accountable for the technical soundness of investigative procedures and the proper management of criminal investigations.

Impact on Family and Personal Life

Family Considerations

The 5805 deployment tempo affects family life. MEU deployments and joint task force deployments add time away from home. The Marine Corps Community Services program, Military OneSource, and Marine Corps Family Team Building provide support systems for families during deployments and extended field exercises. The PCS tempo for warrant officers is generally more stable than for commissioned officers because warrant assignments are tied to technical billets rather than command and staff rotations. This stability is a significant benefit for families.

Dual-Military and Family Planning

The Marine Corps handles dual-military couples through assignment coordination policies that attempt to collocate spouses when possible. For warrant officer and commissioned officer couples, the same policies apply, though the technical nature of warrant billets can make collocation more challenging in some cases. Warrant officers generally have more assignment stability than commissioned officers, which benefits family planning. During deployments and extended field exercises, family support programs remain available through MCCS and Military OneSource.

Marine Corps Reserve

Component Availability

The 5805 Criminal Investigation Officer is available in the Marine Corps Reserve. Reserve CID units exist within the Marine Forces Reserve structure. Career progression in the Reserve follows the same warrant officer path as Active Duty, though billet availability at the CW4 and CW5 levels is more limited in the Reserve component.

Appointment Paths

Reserve warrant officer appointment works through two primary paths. Enlisted Reserve Marines in the 58 field can apply through the same MARADMIN board process as Active Duty Marines. Active Duty warrant officers can transfer to the Reserve component, bringing their warrant grade and technical expertise to Reserve CID units. In both cases, the same eligibility requirements apply.

Drill and Training Commitment

The standard Reserve commitment is one weekend per month for drill and two weeks per year for Annual Training. The 5805 may require additional training days for CID currency requirements, investigative technique qualifications, and joint investigative exercises. The technical nature of the MOS means that maintaining proficiency requires consistent training beyond the minimum drill schedule.

Part-Time Pay

A Reserve warrant officer earns base pay for each drill period. A W-2 with approximately 10 years of service earns roughly $5,058.90 per month on Active Duty. For Reserve drill, this translates to approximately $1,686 per drill weekend (four drill periods at one-thirtieth of monthly base pay each). A CW3 with approximately 16 years of service earns roughly $7,665.90 per month on Active Duty, translating to approximately $2,555 per drill weekend.

Benefits Differences

Reserve warrant officers have access to Tricare Reserve Select, which requires monthly premiums unlike the zero-cost TRICARE Prime for Active Duty members. Education benefits include Federal Tuition Assistance and GI Bill eligibility based on qualifying service. The Reserve retirement system is points-based. A good year requires 50 plus retirement points. Twenty good years qualifies for retirement, with collection beginning at age 60 (reducible by 90 days for each 90 consecutive days of qualifying Active Duty). The pension formula uses 2.5 percent times years of service times the high-36 average base pay, with retirement points converted to equivalent years. Most Reserve retirees receive a smaller pension than Active Duty retirees due to fewer points accumulated per year.

Career Progression

Reserve warrant officers can progress to CW4 and CW5, though billets at those grades are limited in the Reserve component. Promotion timing may differ from Active Duty due to smaller selection pools and fewer available billets. Reserve warrant officers can attend career-level courses, intermediate education, and other PME through the same Marine Corps Training and Education Command programs as Active Duty warrant officers.

Deployment and Mobilization

Reserve 5805s may be mobilized for combat deployments, Active Duty for Operational Support tours, and operational support missions. Mobilization length varies by mission requirements, with typical deployments running 7 to 12 months. The mobilization tempo for Reserve CID Marines depends on the operational requirements of Marine Forces Reserve and the broader Marine Corps.

Civilian Career Integration

The 5805 pairs well with civilian careers in federal law enforcement, corporate investigations, and fraud examination. Many Reserve 5805s work for the FBI, DEA, ATF, Homeland Security Investigations, or private sector investigative firms. Reserve service enhances civilian career prospects by maintaining current investigative skills and providing ongoing leadership experience. USERRA protections ensure job security for civilian employers during mobilizations.

Active vs. Reserve Comparison

Post-Service Opportunities

Transition to Civilian Life

The 5805 Criminal Investigation Officer prepares warrant officers for civilian technical and leadership roles in several industries. Federal law enforcement agencies actively recruit former CID warrant officers for special agent roles, supervisory positions, and specialized investigative units. State and local law enforcement agencies value CID experience for detective roles and supervisory positions. Private sector opportunities include corporate investigations, fraud examination, and security consulting.

Transition programs available include the Transition Readiness Program, SkillBridge, and Hiring Our Heroes. These programs connect warrant officers with civilian employers during the final months of service.

Civilian Career Prospects

Certifications and Credentials

Marine Corps COOL funds civilian certifications relevant to criminal investigation, including certified fraud examiner, digital forensics analyst, and criminal justice management credentials. The GI Bill supports post-service education, covering up to $29,920.95 per year for private school tuition or full in-state tuition at public schools, plus a monthly housing allowance and annual book stipend. Warrant officers with 20 plus years of service can begin collecting their pension at retirement, providing financial stability during the transition to civilian careers.

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

Ideal Candidate

The ideal 5805 candidate is a senior NCO or SNCO in the 58 investigative field who wants to stay technical rather than shift to generalist leadership. You should have a strong interest in criminal investigation, evidence handling, and investigative procedure. You should be comfortable serving as an advisor rather than a commander. You should value technical depth over broad career progression. The Marines who thrive as 5805s are those who find genuine satisfaction in managing complex investigations and maintaining professional standards in criminal justice operations.

Potential Challenges

The 5805 path is not ideal for Marines who want command authority. Warrant officers do not command units in the traditional sense. The promotion path to CW5 is slow and highly competitive. The CID community is small, which means fewer billets and less geographic flexibility than larger MOS communities. The work is detail-oriented and requires patience, thoroughness, and the ability to manage sensitive information. The civilian pay gap in federal law enforcement can be a factor for warrant officers considering separation.

Career and Lifestyle Alignment

The 5805 aligns well with Marines who want a full 20 to 30 year career as a technical expert. It also works for those who plan to transition to civilian law enforcement or investigative careers after their warrant service. The Reserve component option provides a path for warrant officers who want to continue serving while building a civilian career. Compared to staying enlisted as a senior SNCO, the warrant path offers more technical authority and less administrative burden. Compared to commissioning as an officer, the warrant path keeps you in your technical lane rather than rotating through generalist staff roles.

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 your local Marine Corps recruiter or Career Planner to discuss the warrant officer path and learn about current board cycles for the 5805 Criminal Investigation Officer. They can provide guidance on eligibility requirements, package preparation, and the timeline for the next selection board. If you are working toward the GT score needed for warrant officer consideration, structured ASVAB preparation can help you reach the required threshold.

Explore more Marine warrant officer roles such as Corrections Officer and CBRN Defense Officer. If you need to improve your GT score before applying, the ASVAB study guide offers targeted preparation resources for the Verbal Expression, Arithmetic Reasoning, and Mathematics Knowledge sections that determine your General Technical score.