Chemical, Biological, Radiological, and Nuclear (CBRN)

The transition from CBRN platoon leader to CBRN company commander is the transition the Chemical Corps is built around — and it is a harder transition than the platoon-leader-to-staff-officer move in most other branches because the CBRN company command is the only true KD in the branch for a captain. There is no 'get two KDs and pick the better one' option in a branch this size. You get one company command — or you get a BCT Chemical Officer or Division Chemical Officer staff tour — and the one you execute is the one the centralized major's board reads, the one the senior rater stakes his profile on, and the one your post-KD billet is built from. The Chemical Captains Career Course at Fort Leonard Wood resets your technical and doctrinal foundation at the company-level and above. The course covers CBRN company operations (all three platoon types — recon, decon, smoke — integrated), division and corps CBRN staff integration, WMD consequence management at the operational level per JP 3-41, CBRN defense planning in a joint environment, and the Chemical Corps functional-area options (FA52) and post-KD career paths documented in DA PAM 600-3. The course is where you meet the peer group you will compete against at the major's board — and the smart move is to treat the course seriously, not as a rest period before the KD sprint. CBRN Company Command as a KD: the company's structure varies by assignment type. A BCT CBRN company (organic to the BSTB in an IBCT, SBCT, or ABCT) runs 80-130 soldiers across a recon platoon, a decon platoon, and a smoke and obscurant platoon, with a headquarters and headquarters platoon. The multifunctional CBRN battalion companies (in the Chemical Corps's independent CBRN BN force structure) may have single platoon types at higher strength. The property book is CBRN-specific and expensive — M93A1 Fox vehicles, M17 LDS decontamination systems, M56 Coyote smoke generators, collective protection generators, detection equipment sets — and the FORSCOM readiness reporting requirement covers every reportable equipment item. The soldiers are your primary concern; the equipment accountability is your primary administrative risk; the CBRN mission execution is what the senior rater and the BCT CDR watch. The BCT Chemical Officer KD: if the assignment slate puts you in the BCT Chemical Officer seat rather than company command, the work is different but the visibility is the same. You are the senior CBRN advisor on the BCT staff — the officer the BCT CDR calls when a CBRN scenario surfaces in the OPORD cycle, when the intelligence summary identifies a chemical weapons stockpile in the objective area, when the CTC CBRN OC/T writeup attributes unit degradation to a failure to execute CBRN contamination avoidance. The BCT Chemical Officer runs the CBRN working group, writes the CBRN annex to every brigade OPORD, coordinates decon support from the organic CBRN company, and briefs the BCT CDR and deputy CDR on CBRN threat and recommended COA. The OER from this billet reflects staff-officer depth, not company-command execution — which affects the post-KD billet market and the major's board read. The Division Chemical Officer and joint staff billets: some 74A captains and majors go to division G-3 CBRN sections, NORTHCOM J3-CBRN, SOCOM support CBRN billets, DTRA rotational positions, or OSD Chemical and Biological Defense Program staff. These billets build the joint-duty assignment credit (JDAL under the Goldwater-Nichols framework) that the field-grade promotion slate values, the interagency coordination experience that the civilian CBRN market values, and the strategic-to-operational CBRN framing that the major's board and the battalion-command slate value. The honest sequence: company command first, then joint/interagency — not because the joint billets are lesser work, but because the centralized major's board reads the company command KD OER as the primary field-grade indicator. The post-KD major's career: CGSC (resident at Fort Leavenworth or non-resident) is the educational gate before the major's board. ILE completion is mandatory for promotion to O-5 under AR 600-8-29. After CGSC the major's billet market for 74A officers is genuinely broad: Chemical Corps BN S-3 or XO (the field-grade KD that gates BN command consideration), NORTHCOM J3-CBRN, DTRA, OSD CBD Program, STRATCOM J5 (nuclear/CBRN policy), COCOM J3-CBRN advisor billets, interagency advisory assignments. The Chemical Corps officer who has company command, CGSC, and a joint-duty credit is competitive for BN command in a branch where the selection pool is small enough that every strong officer is visible. The FA52 (Nuclear and Counterproliferation Officer) functional area designation: DA PAM 600-3 defines FA52 as the Chemical Corps functional area for officers with nuclear weapons policy, arms control verification, counterproliferation, and WMD-CM expertise at the strategic level. The FA52 designation is typically sought at the 7-8 year mark — after KD, at or near the CGSC window — and the billets it leads to (DTRA, OSD Policy, STRATCOM J5, ODNI, Arms Control Verification Office) are genuine interagency and joint-strategic roles. The honest question is whether the officer's talent and interest fit the strategic-analytic mission or the operational-tactical CBRN command mission — and DA PAM 600-3's FA52 chapter combined with a frank conversation with the HRC CBRN branch manager is the only authoritative read on the designation criteria and the current billet demand.