text: Appendix C
  * The encircled force lacks adequate terrain available to conduct its defense.
  * The encircled force cannot sustain itself long enough for relief by forces from outside the encircled
  pocket.
  ORGANIZATION OF FORCES FOR A BREAKOUT
  C-37. Encircled units conducting a breakout attack typically task-organize to perform rupture, follow and
  assume, main body, and rear guard missions. The senior commander within an encirclement organizes a
  reserve and a separate deception force if sufficient forces exist. Previous combat may have attired the combat
  power of encircled units. The commander prioritizes which ones to resource if sufficient combat power does
  not exist to resource each of the forces. See the applicable organization depicted in figure C-7.
  Figure C-7. Organization of forces for a breakout operation
  C-38. Normally, the commander’s first priority is to resource the force with the rupture mission. The
  commander typically assigns multiple missions to subordinate forces because there are typically not enough
  forces in the encirclement to have separate forces for each required mission. For example, the follow and
  assume force could receive a be-prepared mission to help extract the rear guard, a mission generally given to
  the reserve. Forces located outside the encirclement assist the breakout by conducting shaping operations.
  Above all, the encircled force maintains the momentum of the breakout attack; otherwise, it is more
  vulnerable to destruction than it was before the breakout attempt.
  C-39. The encircled force reorganizes to conduct the breakout based on available resources. Without
  resupply, armored, mechanized, and motorized infantry units may not be able to move all their vehicles
  during the breakout attack. Priority of support may be limited to the rupture force and the rear guard, with
  the remaining force keeping only sufficient transportation assets to move the wounded and critical assets and
  supplies. The breakout plan outlines the commander’s destruction criteria for equipment or supplies left
  behind. The unit destroys all vehicles, critical munitions, supplies, and equipment (except medical supplies)
  it cannot move.
  C-40. An encircled force attacks using the rupture force to penetrate the enemy defensive positions in at least
  one location. The unit produces overwhelming combat power at each breakout point. The unit assigns the
  rupture force, which varies in size from one-third to two-thirds of the total encircled force, the mission to
  penetrate the enemy force’s encircling position, widen the gap, and hold the shoulders of the gap until all