text: Glossary
  principle
  A comprehensive and fundamental rule or an assumption of central importance that guides how an
  organization approaches and thinks about the conduct of operations. (ADP 1-01)
  *priority of fires
  The commander’s guidance to the staff, subordinate commanders, fires planners, and supporting
  agencies to employ fires in accordance with the relative importance of a unit’s mission.
  *priority target
  A target, based on either time or importance, on which the delivery of fires takes precedence over all
  the fires for the designated firing unit or element.
  protection
  Preservation of the effectiveness and survivability of mission-related military and nonmilitary
  personnel, equipment, facilities, information, and infrastructure deployed or located within or outside
  the boundaries of a given operational area. (JP 3-0)
  pursuit
  A type of offensive operation to catch or cut off a disorganized hostile force attempting to escape, with
  the aim of destroying it. (FM 3-90)
  rear operations
  Tactical actions behind major subordinate maneuver forces that facilitate movement, extend
  operational reach, and maintain desired tempo. (FM 3-0)
  reconnaissance
  A mission undertaken to obtain information about the activities and resources of an enemy or
  adversary, or to secure data concerning the meteorological, hydrographic, geographic, or other
  characteristics of a particular area, by visual observation or other detection methods. (JP 2-0)
  reconnaissance objective
  The most important result desired from that specific reconnaissance effort. (FM 3-90)
  reinforcing
  A support relationship requiring a force to support another supporting unit. (FM 3-0)
  relative advantage
  A location or condition, in any domain, relative to an adversary or enemy that provides an opportunity
  to progress towards or achieve an objective. (FM 3-0)
  relief in place
  An operation in which, by direction of higher authority, all or part of a unit is replaced in an area by
  the incoming unit and the responsibilities of the replaced elements for the mission and the assigned
  zone of operations are transferred to the incoming unit. (JP 3-07.3)
  required supply rate
  The amount of ammunition expressed in terms of rounds per weapon per day for ammunition items
  fired by weapons, in terms of other units of measure per day for bulk allotment, and other items
  estimated to be required to sustain operations of any designated force without restriction for a specified
  period. (ATP 3-09.23)
  reserve
  That portion of a body of troops that is withheld from action at the beginning of an engagement to be
  available for a decisive movement. (ADP 3-90)
  restricted operations zone
  Airspace reserved for specific activities in which the operations of one or more airspace users is
  restricted. (JP 3-52)