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Army MOS · Support

31B Military Police

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

Military Police conduct maneuver and mobility support, area security, police intelligence, internment and resettlement, and law and order operations on the battlefield. They also handle prisoner of war and civilian internee operations while supporting Army communities through resource security, crime prevention, and preservation of law and order.

Minimum clearance: Secret

Minimum ASVAB: ST 91

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: smartbook-611-21-ch10c-fy2025 (source date 2025-12). Policy applicability has not been established.

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Core Skills

  • Battlefield maneuver and mobility support
  • Prisoner of war and civilian internment operations
  • Protection of critical Army resources

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Police and Sheriff's Patrol Officers

Army community law-and-order operations and crime prevention experience transfer directly to civilian patrol and public-safety work.

How to prepare: Contact a target agency's recruiting office to plan its academy and supervised on-the-job training route, including instruction in state and local law, civil rights, and police ethics. Applicants need at least a high school diploma or equivalent, some agencies require college coursework or a degree, and candidates usually must be at least 21 and meet rigorous physical and personal standards; citizenship requirements vary across state and local jurisdictions, while federal officers must be U.S. citizens.

What the civilian work involves
  • Provide for public safety by maintaining order, responding to emergencies, protecting people and property, enforcing motor vehicle and criminal laws, and promoting good community relations.
  • Record facts to prepare reports that document incidents and activities.
Civilian tools and software (examples)
  • Microsoft Word

Security Guards

Area security and protection of critical Army resources transfer to guarding civilian property and preserving order.

How to prepare: Arrange the guard training required in your intended state and practice site emergency procedures and incident communication. Most states require licensing, generally including age 18, a background check, and training; armed guards usually need weapons authorization and face stricter entry checks, while a high school diploma or equivalent is typical but not universal.

What the civilian work involves
  • Patrol industrial or commercial premises to prevent and detect signs of intrusion and ensure security of doors, windows, and gates.
  • Answer alarms and investigate disturbances.
  • Circulate among visitors, patrons, or employees to preserve order and protect property.
Civilian tools and software (examples)
  • Microsoft Word

Notes & Sources

Evidence for this guidance (5 documents)
  1. Army COOL MOC feed: 31B Military Police

    [1] data/authority/army-codes.json entry 31B (OSD COOL feed, fetched 2026-07-25); DB rank enlisted, authority codeType enlisted

    Supports: Battlefield maneuver and mobility support, Prisoner of war and civilian internment operations, Protection of critical Army resources, Police and Sheriff's Patrol Officers (O*NET 33-3051.00), Security Guards (O*NET 33-9032.00)

  2. O*NET: Police and Sheriff's Patrol Officers

    [2] O*NET 30.3 occupational data

    Supports: Police and Sheriff's Patrol Officers (O*NET 33-3051.00)

  3. Bureau of Labor Statistics: Police and Detectives

    [3] How to Become, Education, Training and Other Experience; checked September 24, 2026

    Supports: Police and Sheriff's Patrol Officers (O*NET 33-3051.00)

  4. O*NET: Security Guards

    [4] O*NET 30.3 occupational data

    Supports: Security Guards (O*NET 33-9032.00)

  5. Bureau of Labor Statistics: Security Guards and Gambling Surveillance Officers

    [5] How to Become One; Licenses, Certifications, and Registrations; page dated 2026-08-27, retrieved 2026-09-23

    Supports: Security Guards (O*NET 33-9032.00)

Defense contractor jobs for 31B

Predecessor codes

Historical codes with documented links to 31B. Each history page explains the change.

95B1Military Police95B2Military Police95B3Military Police95B4Military Police95B5Military Police

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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