Combat command is an art. It derives its meager intellectual roots from empirical science. There is great current interest in grounding the subject of command and control (C2) from a sounder, more comprehensive point of view. This paper is intended to provide a general, internally consistent structure within which most C2 may be framed and analyzed. It departs from the usual approach by insisting that tactical C2 can only be described and analyzed in the context of combat itself. This research draws from a theory of combat and imbeds the C2 functions, processes, and supporting systems within the theory.