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Army MOS · Combat & Infantry

74D Chemical, Biological, Radiological, and Nuclear (CBRN) Specialist

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

The CBRN Specialist conducts reconnaissance, surveillance, decontamination, obscuration, and sensitive site exploitation operations. The specialist operates and performs operator maintenance on assigned CBRN defense and individual protective equipment, while CBRN NCOs in nonchemical units plan, conduct, and evaluate CBRN training and advise company and higher level organizations on CBRN operations and hazards.

Minimum ASVAB: ST 100

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

  • CBRN reconnaissance and surveillance operations
  • Decontamination operations and protective-equipment use
  • Operator maintenance of CBRN defense equipment
  • CBRN training evaluation by NCOs in nonchemical units

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.

Hazardous Materials Removal Workers

Military decontamination operations and CBRN protective-equipment use align with hazardous-material cleanup work.

How to prepare: Check the target job's material- and jurisdiction-specific worker accreditation, certification or licensing requirements, especially for asbestos or lead, and identify any required hazardous-waste-site training before selecting a course.

What the civilian work involves
  • Build containment areas prior to beginning abatement or decontamination work.
  • Identify asbestos, lead, or other hazardous materials to be removed, using monitoring devices.
  • Comply with prescribed safety procedures or federal laws regulating waste disposal methods.

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Career Growth

  • Certified Hazardous Materials Manager (CHMM)

    Supports progression from field cleanup into broader hazardous-material handling and site-remediation responsibilities.

    Eligibility and preparation: A baccalaureate degree or higher from an accredited college or university and at least four years of relevant experience in hazardous materials management or a related field; all eligibility requirements must be met before scheduling and taking the exam.

    For: Hazardous Materials Removal Workers

Notes & Sources

Evidence for this guidance (3 documents)
  1. Army COOL MOC feed: 74D Chemical, Biological, Radiological, and Nuclear (CBRN) Specialist

    [1] data/authority/army-codes.json entry 74D (OSD COOL feed, fetched 2026-07-25); DB rank enlisted, authority codeType enlisted

    Supports: CBRN reconnaissance and surveillance operations, Decontamination operations and protective-equipment use, Operator maintenance of CBRN defense equipment, CBRN training evaluation by NCOs in nonchemical units, Hazardous Materials Removal Workers (O*NET 47-4041.00)

  2. O*NET: Hazardous Materials Removal Workers

    [2] O*NET 30.3 occupational data

    Supports: Hazardous Materials Removal Workers (O*NET 47-4041.00)

  3. COOL credential mapping: Certified Hazardous Materials Manager (CHMM)

    [3] 74D cached COOL credential feed

    Supports: Certified Hazardous Materials Manager (CHMM)

    [4]IHMM: Certified Hazardous Materials Manager eligibility · Eligibility Requirements, Prerequisites and Relevant Experience; retrieved 2026-09-23

    Supports: Certified Hazardous Materials Manager (CHMM)

Defense contractor jobs for 74D

Predecessor codes

Historical codes with documented links to 74D. Each history page explains the change.

54B1Chemical Operations Specialist54B2Chemical Operations Specialist54B3Chemical Operations Specialist54B4Chemical Operations Specialist54B5Chemical Operations Specialist

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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