Which publication covers CBRN operations?

• A. FM 4-25.11
• B. AR 165-1
• C. FM 3-11
• D. FM 7-1

Answer: (C)

The focus here is identifying which Army publication provides the doctrine for operating in CBRN (Chemical, Biological, Radiological, and Nuclear) environments. The publication dedicated to CBRN operations is FM 3-11, which lays out how to plan, prepare, and execute CBRN tasks and how to integrate them with overall maneuver and mission objectives. It covers detection and warning, protection measures, decontamination, medical response, and hazard mitigation—essential elements for functioning effectively under CBRN conditions on the battlefield.

The other options cover topics that are either not specifically about CBRN operations or deal with different aspects of defense and doctrine, so they do not serve as the standard source for CBRN operations doctrine.