text: Chapter 1
  weapons control status — (DOD) An air and missile defense control measure declared for a particular area
  and time by an area air defense commander, or delegated subordinate commander, based on the rules of
  engagement that establish the conditions under which fighters and surface air defense weapons are permitted
  to engage threats. (JP 3-01) Also called WCS.
  weapons locating radar — A continuous target acquisition counterbattery system that detects in-flight
  projectiles, and communicates point of origin and point of impact locations. (FM 3-09)
  weapons of mass destruction — (DOD) Chemical, biological, radiological, or nuclear weapons capable of a
  high order of destruction or causing mass casualties and exclude the means of transporting or propelling the
  weapon where such means is a separable and divisible part from the weapon. (JP 3-40) Also called WMD.
  weapons of mass destruction defeat — (DOD) Activities designed to control, defeat, disable, and dispose of
  extant weapons of mass destruction and the ability to stockpile, transfer, or employ weapons of mass
  destruction. (JP 3-40) Also called WMD defeat.
  wedge formation — A movement formation with one lead element and the trail elements are paired off abreast
  of each other on the flanks. (FM 3-90)
  wide area security — The application of the elements of combat power in unified action to protect populations,
  forces, infrastructure, and activities; to deny the enemy positions of advantage; and to consolidate gains in
  order to retain the initiative. (ADP 3-0)
  withdraw — To disengage from an enemy force and move in a direction away from the enemy. (ADP 3-90)
  working group — (Army) A grouping of predetermined staff representatives who meet to provide analysis,
  coordinate, and provide recommendations for a particular purpose or function. (FM 6-0)
  wreck train — A train specially configured and tailored to conduct wreck recovery operations. (ATP 4-14)
  —X—
  X-hour — The unspecified time that commences unit notification for planning and deployment preparation in
  support of potential contingency operations that do not involve rapid, short notice deployment. (FM 3-99)
  X-hour sequence — An extended sequence of events initiated by X-hour that allow a unit to focus on planning
  for a potential contingency operation, to include preparation for deployment. (FM 3-99).
  —Z—
  zone — An operational area assigned to a unit in the offense that only has rear and lateral boundaries. (FM 3-0)
  zone of fire — (DOD) An area into which a designated ground unit or fire support ship delivers, or is prepared to
  deliver, fire support. (JP 3-09) Also called ZF.
  zone reconnaissance — A form of reconnaissance operation that involves a directed effort to obtain detailed
  information on all routes, obstacles, terrain, and enemy forces within a zone defined by boundaries. (FM 3-90)