text: Chapter 4
  the command group near the most critical event,usually with or near the main effort or decisive operation.
  The BCT XOmay establish a second command group when required.
  Early-Entry Command Post
  4-234. While not a separate section of the unit’s table of organization and equipment,the commander can
  establish an early-entry CP to assist in controlling operations during the deployment phase of an operation.
  An early-entry command post is a lead element of a headquarters designed to control operations until the
  remaining portions of the headquarters aredeployed and operational (FM 6-0). The early-entry CP normally
  consists of personnel and equipment from the TACwith additional intelligence analysts,planners,and other
  staff officers from the main CP based on the situation. The early-entry CP performs the functions of the main
  andTACsuntil they are deployed and operational. The BCT XOorS-3normally leads the early entry CP,
  when established.
  Note. (See FM 3-99, for information on airborne assault and air assault CP organization and
  operation.)
  COMMAND POSTCELLS
  4-235. The situation determines CP cell organization. A command post cellis a grouping of personnel and
  equipment organized by warfighting function or by planning horizon to facilitate the exercise of mission
  command (FM 6-0). Staff elements, consisting of personnel and equipment from staff sections, form CP
  cells. Typically,a BCT organizes into two types of CP cells: integrating cells (current operations and plans)
  and functional cells (intelligence,movement and maneuver,fire support,protection,sustainment). Integrating
  and functional cells provide staff expertise,communications,and information systems that work in concert
  to aid the commander in planning and controlling operations. (See figure 4-15.)
  Figure 4-15. Integrating and functional cells