text: FM 7-100.1________________________________________________________________________________
  ORGANIZING THE BATTLEFIELD FOR THE OFFENSE
  3-28. In his operation plan, the commander specifies the organization of the
  battlefield from the perspective of his level of command. Within his unit’s
  area of responsibility (AOR), as defined by the next-higher commander, he
  designates AORs for his subordinates, along with zones, objectives, and axes
  related to his own overall mission.
  Enemy Main Line of
  Resistance
  OSC
  LOR
  Initial Initial
  Support Initial Battle Zone Disruption
  Zone Zone
  OSC AREA OF RESPONSIBILITY Kill
  Zone
  OSC
  LOR
  Objective
  Axis
  Attack Zone
  Kill
  Zone
  OSC
  LOR
  Initial Subsequent Initial Initial Subsequent
  Support Support Battle LOR LOR
  Line Line Line Subsequent
  Battle Line
  Figure 3-1. Example of an AOR (Linear Battlespace)
  Areas of Responsibility
  3-29. OPFOR AORs normally consist of three basic zones: the disruption
  zone, the battle zone, and the support zone. These zones have the same basic
  purposes in all types of offense. In the offense, AORs also may contain one
  or more attack zones, kill zones, objectives, and/or axes. Zones may be linear
  or nonlinear in nature. See Figures 3-1 and 3-2 for generalized examples of
  AORs and zones.