This publication provides multiservice tactics, techniques, and procedures (MTTP) for planning and conducting nuclear, biological, and chemical (NBC) reconnaissance operations to detect, define the limits of, mark, sample, and identify NBC and toxic industrial material (TIM) contamination that United States (US) forces may encounter in an NBC environment. The term NBC environment as used in this publication refers to an environment in which there is deliberate or accidental employment of NBC weapons, release of industrial chemicals, or contamination with radiological materials. This publication provides commanders, staffs, and unit leaders with a key reference for planning and conducting NBC reconnaissance operations. It addresses concepts, principles, and fundamentals for multiservice considerations. It also serves as a key source document for developing other multiservice manuals and refining existing training support packages (TSPs), training center exercises, and service school curriculum. The information furnished provides data that can be used to support NBC reconnaissance planning and operations based on intelligence preparation of the battlespace (IPB). This publication is designed for use at operational and tactical levels. It supports the command staff plan for preparing and conducting NBC reconnaissance operations. It is prepared as a multiservice publication to define service capabilities when conducting NBC reconnaissance. The manual also provides guidance on dismounted and mounted techniques for NBC reconnaissance leaders and personnel who are conducting NBC reconnaissance missions.