text: _________________________________________________________________________________Chapter 4
  of subordinate division and brigade tactical groups (DTGs and BTGs), al-
  though assets directly controlled by the OSC could also operate throughout
  an OSC disruption zone. In such cases, each subordinate would be responsi-
  ble for a portion of the operational-level disruption zone, and that portion
  would constitute the subordinate’s disruption zone within its own AOR. In
  other cases, an operational-level disruption zone may extend beyond those of
  the FG’s or OSC’s subordinates, to include an area occupied by forces sent out
  under direct control of the FG or OSC commander.
  4-38. Operational-level forces in the disruption zone could include special-
  purpose forces (SPF) and affiliated forces, which could be operating in enemy-
  held territory even before the beginning of hostilities. There could also be
  stay-behind forces in areas seized by the enemy.
  Battle Zone
  4-39. The battle zone is that battlespace in which the main defense force uses
  fires and maneuver to exploit the conditions created by successful disruption
  zone operations. In the battle zone, the main defense force completes the dis-
  aggregation of the enemy’s combat system by destroying the components ex-
  posed by the disruption force. By inflicting significant damage or denying the
  enemy his objectives, the main defense force causes the enemy to culminate
  and, in the best case, to quit the field entirely. An operational-level battle
  zone is often the aggregate of the battle zones of subordinate units.
  4-40. The battle zone ties all available obstacles into an integrated fire sup-
  port plan of all available weapons. It denies complex terrain to the enemy. It
  allows the enemy to enter easily, but to exit only at great cost or ideally not
  at all. The operational-level commander may establish kill zones within the
  battle zone for the purpose of integrating long-range fire, ground attack avia-
  tion, and main defense forces. Long-range fires from the battle zone may also
  reach kill zones in the disruption zone, where these fires can be integrated
  with the actions of disruption forces.
  Support Zone
  4-41. The support zone is that area of the battlespace designed to be free of
  significant enemy action and to permit the effective logistics and administra-
  tive support of forces. Security forces (see Organizing Forces for the Defense
  below) operate in the support zone in a combat role to defeat enemy special
  operations forces and other threats. Camouflage, concealment, cover, and de-
  ception (C3D) measures occur throughout the support zone to protect the force
  from standoff RISTA and precision attack.
  Attack Zone
  4-42. During an overall defensive operation, an attack zone may be employed
  to conduct an offensive action inside a larger defensive action. It will have the
  characteristics described in Chapter 3. An axis is a control measure showing
  the location through which a counterattack force, for example, will move as it
  proceeds from its assembly area to its attack zone. At the operational level,
  multi-division OSCs may conduct offensive actions as a part of a larger de-
  fensive scheme.