This field manual describes the organization and employment of the digitized air and missile defense (AMD) Sentinel platoon, sections, and teams. The term Sentinel incorporates the C2 node, radar, and associated equipment. C2 and C3 are interchangeable. This FM is to be used by the AMD Sentinel platoon leader and soldiers organic to Heavy and Light Divisional AMD battalions and AMD batteries supporting those respective Heavy and Light Divisions, Light/Heavy ACRs, and Separate Brigades.