This publication is the doctrinal guide for NBC reconnaissance. It provides guidance on the planning and execution of NBC reconnaissance missions and chemical/biological (CB) sampling operations. This manual applies to any unit that has the primary or implied mission of performing NBC reconnaissance. NBC recon provides early warning, determines the concentration and type of agent, and locates the boundaries of contamination. The information derived from the intelligence preparation of the battlefield (IPB) and the conduct of effective NBC recon operations are key factors for battlefield management. The avoidance of NBC contamination facilitates freedom of movement and maneuver for our forces. Contamination avoidance procedures are discussed in greater detail in FM 3-3 and FM 3-3-1. NBC recon performs five critical tasks on the battlefield-- detect, identify, mark, report, and sample. This manual also provides the principles and techniques used by NBC recon units. It defines the capabilities and limitations of these organizations.
FM 3-19/FMFM 11-20