Which Field Manual covers CBRN?

The correct answer is FM 3-11, which is the Field Manual that specifically addresses chemical, biological, radiological, and nuclear (CBRN) operations. This manual provides comprehensive guidance on how military forces should prepare for, respond to, and recover from CBRN incidents. It includes key information on threat assessments, operational planning, and the protective measures necessary to safeguard personnel and equipment during CBRN threats. FM 3-11 is vital for understanding both the tactics and procedures involved in handling CBRN environments, making it an essential resource for military personnel engaged in operations where CBRN hazards may be present.

In contrast, other field manuals mentioned pertain to different aspects of military operations, such as weapons training, unit deployment, or operational leadership, and do not focus specifically on CBRN matters. This differentiation helps to clarify the unique role and focus of FM 3-11 in ensuring readiness and safety in CBRN situations.