This page was prepared by SSG Ho Yong Lee, a Korean-speaking U.S. Army recruiter, as an informational guide for the Β 74D Chemical, Biological, Radiological, and Nuclear (CBRN) Specialist.
Hello,
My name is SSG Lee Ho Yong, a U.S. Army Korean-speaking recruiter currently serving at the Fairfax Recruiting Center in Virginia.
This guide provides an overview of the Β 74D Chemical, Biological, Radiological, and Nuclear (CBRN) Specialist Military Occupational Specialty (MOS).
A 74D Soldier is responsible for protecting Soldiers and equipment against chemical, biological, radiological, and nuclear (CBRN) threats. These specialists are trained to detect hazardous materials, conduct reconnaissance, perform decontamination operations, and support emergency response missions.
This page covers:
Job responsibilities
Training
Green Card eligibility
ASVAB requirements
Army career opportunities
Civilian certifications and career pathways
This page is designed to help you understand the MOS more clearly before starting the enlistment process.
Actual eligibility may depend on your personal immigration status, ASVAB score, security clearance requirements, current Army regulations, and MOS availability at the time of enlistment.
Consultations are free, and you are welcome to ask questions just to understand your current options.
Real recruiter. Real answers.
A father of four and an immigrant myself, I provide honest guidance based on real recruiting experience.
The 74D Chemical, Biological, Radiological, and Nuclear (CBRN) Specialist is the U.S. Army's primary specialist for defending against weapons of mass destruction and hazardous materials.
A CBRN Specialist may perform duties such as:
Chemical defense
Biological hazard response
Radiological monitoring
Nuclear hazard response
Hazardous materials (HazMat) management
Decontamination operations
CBRN reconnaissance
Protective equipment (PPE) operations
During peacetime, Soldiers conduct training, inspections, and emergency preparedness activities. During operational missions, they may respond to hazardous material incidents and CBRN-related threats.
Many people think of this career as an Army HazMat Specialist or a Military CBRN Professional.
Assignments vary depending on unit type and mission.
Chemical agent detection
Biological hazard detection
Radiological monitoring
Nuclear hazard assessment
Hazardous material identification
Decontamination operations
Protective equipment inspection
CBRN reconnaissance
Emergency response support
Risk assessment
Actual duties and work environments may vary depending on the type of unit, assignment, training level, and deployment status.
74D applicants generally complete 10 weeks of Basic Combat Training (BCT) followed by 11 weeks of Advanced Individual Training (AIT).
During training, Soldiers may learn:
Chemical detection
Biological defense
Radiological monitoring
Nuclear defense
Hazardous materials response
Decontamination procedures
CBRN reconnaissance
Emergency incident response
Protective equipment operations
Training content and length may change depending on Army policy.
74D CBRN Specialist is currently available to Green Card holders.
However, actual eligibility may depend on:
βͺ Current Army regulations
βͺ MOS availability at the time of contract
βͺ Individual immigration status
βͺ Additional qualification requirements
Some MOSs may require U.S. citizenship due to security clearance requirements. For this reason, it is best to confirm your eligibility through a recruiter before making a decision.
Your ASVAB score can be an important factor when applying for 74D CBRN Specialist.
The commonly referenced requirement is:
Skilled Technical (ST) - 100 or higher
Line scores can affect MOS eligibility, and required scores may change depending on current Army policy.
If you have questions about the ASVAB or PiCAT, separate guidance is available.
74D CBRN Specialist can provide experience in areas such as:
Hazardous materials management
Emergency response operations
Risk assessment
Environmental safety
CBRN reconnaissance
Leadership and team management
Many Soldiers also pursue:
Army Schools
Professional Certifications
Emergency Management
Homeland Security
Environmental Health & Safety (EHS)
Industrial Safety
Experience and opportunities may vary depending on assignment, Army needs, individual performance, and future career goals.
One of the biggest advantages of serving as a 74D CBRN Specialist is gaining specialized experience that can support careers in emergency response, environmental safety, industrial safety, and hazardous materials management.
While serving, Soldiers may become eligible to pursue a variety of nationally recognized certifications through Army Credentialing Opportunities On-Line (Army COOL), Army Credentialing Assistance, and other military education programs, depending on eligibility, funding availability, and individual career goals.
Examples of certification areas include:
Hazardous Materials (HazMat)
OSHA Safety Certifications
Emergency Management
FEMA Incident Command System (ICS)
Environmental Health & Safety (EHS)
Occupational Safety
Emergency Response Planning
Hazardous Waste Operations
During military service, Soldiers may also develop practical experience in:
Hazardous material identification
Chemical safety procedures
Decontamination operations
CBRN detection equipment
Personal Protective Equipment (PPE)
Risk assessment
Emergency preparedness
Incident response
This experience may be valuable when pursuing civilian careers such as:
Environmental Health & Safety (EHS) Specialist
Emergency Management Specialist
Hazardous Materials Technician
Fire Department HazMat Team
Homeland Security
Environmental Compliance
Chemical Manufacturing
Nuclear Power Industry
Oil & Gas Industry
Industrial Safety
Government Emergency Response
Unlike some military occupations, Army training does not automatically convert into a civilian professional license or certification.
However, military education and documented work experience may satisfy portions of the education, training, or experience requirements for certain civilian credentials, depending on the credentialing organization and state regulations. Army COOL is specifically designed to help Soldiers identify credentials that align with their MOS and civilian career goals.
Many Soldiers also use:
Army COOL
Army Credentialing Assistance (CA)
Tuition Assistance (TA)
The Post-9/11 GI Bill
to earn additional civilian certifications while serving or after transitioning from the Army.
CBRN Specialists are trained to work around hazardous environments while following strict Army safety procedures and using specialized protective equipment.
No.
All required technical knowledge is taught during Advanced Individual Training (AIT).
Yes.
This MOS is currently available to qualified Green Card holders, subject to current Army regulations and MOS availability.
Yes.
The technical training, leadership experience, and emergency response skills gained as a 74D can support careers in environmental safety, industrial safety, emergency management, and hazardous materials response. Many Soldiers also pursue civilian certifications through Army-funded credentialing programs to strengthen their transition into the civilian workforce.
If you have any questions, feel free to reach out.
Real recruiter. Real answers.
SSG Lee Ho Yong
U.S. Army Recruiter
π± Phone/Text: 703-594-6878
π§ E-mail 1: β hoyong.lee4.mil@army.mil
π§ E-mail 2 β sgt.hoyong.lee@gmail.com
π Google Search:
βSSG Lee Ho Yongβ
I currently serve at the Fairfax Recruiting Center in Virginia, where I assist applicants in the Northern Virginia area.
Because many parts of the U.S. Army enlistment process can be coordinated through online consultation, I also assist applicants from other states across the United States, not only those living in Virginia.
Note: Actual MEPS processing and shipping procedures are generally handled based on the applicantβs residential area.