text: _________________________________________________________________________________Chapter 4
  Areas of Responsibility
  4-34. OPFOR AORs normally consist of three principal zones: disruption,
  battle, and support zones. Zones may be linear or nonlinear in nature and
  are designed to facilitate rapid transition between linear and nonlinear
  operations, as well as between offense and defense. These zones have the
  same basic purposes in all types of defenses. In addition to the basic zones in an
  AOR, the operational-level commander may also employ attack zones and kill
  zones to control subordinate offensive operations conducted in support of the
  overall defensive scheme. See Figures 4-1 and 4-2 for generalized examples of
  AORs and zones in linear and nonlinear defensive operations.
  OSC
  OSC DTG DTG OSC
  Disruption Disruption Battle Zone X X Support
  Zone Zone Zone
  (if employed)
  X X
  Z
  OKILL
  KILL N E
  Enemy
  ZONE
  X
  X
  DTG DTG
  Disruption Battle Zone X X XXX
  Zone OSC
  (if employed)
  X
  X
  X
  ZOK NIL EL KI
  ZLL
  O NE
  OSC
  X Reserve
  X
  BTG
  Battle Zone I I
  Enemy
  KILL
  ONE
  X OSC
  Z
  Antilanding
  Reserve
  OSC
  Figure 4-1. Example of AOR (Linear Battlespace)