Since World War I, chemical soldiers have supported every conflict, war or named operation that the Army has been involved in, as the Chemical Warfare Service and later renamed the Chemical Corps.
74D, or Chemical, Biological, Radiological and Nuclear (CBRN) Specialists, are primarily responsible for defending the country against the threat of CBRN weapons and Weapons of Mass Destruction. CBRN specialists assist in the establishment of CBRN defense measures, provide training advice and supervision regarding CBRN equipment and operations.
Instructors from the 3rd Brigade Chemical, 102d Training Division conducting the course provide skill building. Soldiers learn operations of CBRN decontamination, defense, detection and monitoring equipment, preparation for CBRN defense actions and procedures, wear and use of protective equipment, hazardous material certification (at the awareness level), and exposure to toxic agents while wearing CBRN protective equipment.