text: Glossary
  defeat
  To render a force incapable of achieving its objectives. (ADP 3-0)
  defeat in detail
  Concentrating overwhelming combat power against separate parts of a force rather than defeating the
  entire force at once. (ADP 3-90)
  defensive operation
  An operation to defeat an enemy attack, gain time, economize forces, and develop conditions favorable
  for offensive or stability operations. (ADP 3-0)
  delay
  When a force under pressure trades space for time by slowing down the enemy’s momentum and
  inflicting maximum damage on enemy forces without becoming decisively engaged. (ADP 3-90)
  deliberate crossing
  The crossing of an inland water obstacle or other gap that requires extensive planning and detailed
  preparations. (ATP 3-90.4)
  denial operations
  Actions to hinder or deny the enemy the use of terrain, supplies, or facilities. (FM 3-90)
  denied, degraded, and disrupted space operational environment
  A composite of those conditions and influences in which space-enabled capabilities have been
  impaired by hostile threats or non-hostile means. (FM 3-14)
  deny
  A task to hinder or prevent the enemy from using terrain, space, personnel, supplies, or facilities. (ATP
  3-21.20)
  destroy
  A tactical mission task that physically renders an enemy force combat-ineffective until reconstituted.
  (FM 3-90)
  *destruction
  In the context of the computed effects of field artillery fires, destruction renders a target out of action
  permanently, or ineffective for a long period of time, producing at least 30-percent casualties or
  materiel damage.
  direction of attack
  A specific direction or assigned route a force uses and does not deviate from when attacking. (ADP 3-
  90)
  direct support
  A support relationship requiring a force to support another specific force and authorizing it to answer
  directly to the supported force’s request for assistance. (FM 3-0)
  disintegrate
  To disrupt the enemy’s command and control, degrading synchronization and cohesion of its
  operations. (FM 3-0)
  disrupt
  1.A tactical mission task in which a unit upsets an enemy’s formation or tempo and causes the enemy
  force to attack prematurely or in a piecemeal fashion. 2. An obstacle effect that focuses fire planning
  and obstacle effort to cause the enemy to break up its formation and tempo, interrupt its timetable,
  commit breaching assets prematurely, and attack in a piecemeal effort. (FM 3-90)
  dislocate
  To employ forces to obtain significant positional advantage in one or more domains, rendering the
  enemy’s dispositions less valuable, perhaps even irrelevant. (FM 3-0)