text: Chapter 7
  7-25. Deep area is the portion of the commander’s area of operations that is not assigned to subordinate units.
  Within this area, the BCT commander conducts deep operations against uncommitted enemy forces to set
  conditions for subordinate commanders conducting operations in the close area. In noncontiguous areas of
  operations,the deep area is the area between noncontiguous areas of operations or beyond contiguous areas
  of operations.
  7-26. Close area is the portion of a commander’s area of operations assigned to subordinate maneuver forces.
  Operations in the close area are operations within a subordinate commander’s area of operations. In
  contiguous areas of operations,a close area assigned to a maneuver force extends from its subordinates’rear
  boundaries to its own forward boundary. In noncontiguous areas of operations, the close area is the area
  within the subordinate commanders’areas of operations.
  7-27. Rear area is the portion of the commander’s area of operations that is designated to facilitate the
  positioning,employment,and protection of assets required to sustain,enable,and control operations. A rear
  area in contiguous areasof operations is an area for any command that extends from its rear boundary forward
  to the rear boundary of the next lower level of command. In noncontiguous areas of operations,the reararea
  is that area defined within the higher commander’s area of operations providing a location to base sustainment
  assets and provide sustainment to the force. A support area(s), generally located within the rear area,
  facilitates the positioning,employment,protection,and control of base sustainment assets required to sustain
  and enable combat operations (see chapter 9).
  Note. Corps and division commanders may establish a consolidation area to exploit tactical
  success while enabling freedom of action for forces operating in the other areas. When designated,
  a consolidation area refers to anarea of operations assigned to an organization,generally a BCT
  or task force,where forces have established a level of control and large-scale combat operations
  have ceased. Consolidation area activities require a balancing of area security and stability
  operations tasks. (See chapter 2,section IVfor a detailed discussion.)
  TASKSASSIGNMENT
  7-28. The BCT commander assigns tasks to subordinate units through the staff. The assignment of a task
  includes not only the task (what), but also the unit (who), place (where), time (when), and purpose (why).
  The commander and staff develop obstacle fire support plans concurrently with the defensive force array,
  again defining a task and purpose for each obstacle and target in keeping with the commander’s stated fire
  support tasks and intended obstacle effects. The desired end state is a plan that defines how the commander
  intends to mass the effects of direct and indirect fires with obstacles and use of terrain to shape the battlefield
  and defeat or destroy the enemy.
  CONTROL MEASURES
  7-29. The BCT plans control measures to provide the flexibility needed to respond to changes in the situation
  and allow the BCT to concentrate combat power at the decisive point. Defensive control measures within the
  BCTs area of operations include designating the security area, the battle handover line, the MBA with its
  associated forward edge of the battle area,and the echelon support area. The BCT and subordinate units use
  battle positions (primary,alternate,supplemental,subsequent,and strong point),direct fire control,and fire
  support coordination measures to conductdefensive operations. The commander designates disengagement
  lines to trigger the displacement of subordinate forces when required. A disengagement lineis a phase line
  located on identifiable terrain that,when crossed by the enemy,signals to defending elements that it is time
  to displace to their next position (ADP 3-90). (See paragraph 7-94 for a discussion of control measures
  associated with defensive operations.)
  MOVEMENT AND MANEUVER
  7-30. The BCT can conduct defensive operations with units out of range andin mutual support of each other.
  Defensive operations with out of range units require a judicious effort by the BCT commander and staff to
  determine the positioning and priority of support assets and capabilities. During the terrain analysis, the