text: Appendix C
  C-61. As other encircled units support or move through the area of penetration, the rear-guard commander
  must deploy forces over an extended area. The rear guard requires flexibility and mobility. The rear guard
  maintains the perimeter against enemy pressure. If the enemy force succeeds in destroying or encircling the
  original rear guard in the breakout process, then the unit must reconstitute a new rear guard.
  Figure C-9. Example breakout by an encircled division
  C-62. The main body follows the follow and assume force. It moves rapidly on multiple routes in an approach
  march immediately behind the follow and assume force, protected on its flanks by security elements. It should
  contain sufficient combat power to protect itself and reinforce the flank or rear security forces if they come
  under attack.
  C-63. Normally, the rear guard initially conducts a withdrawal to break contact with the enemy forces around
  the perimeter. It contracts the perimeter as it delays behind the main body. If enemy forces closely pursue the
  breakout force, the efforts of the rear guard may become the main effort for the encircled force. The unit
  should position the reserve where it can also support the rear guard.
  C-64. Initially, the priority for fire support is with the rupture force. Those fires focus on suppressing and
  obscuring the point of penetration. Fire support assets move as part of the main body and rear guard so
  security forces have adequate fire support. Target identification difficulties resulting from proximity and
  intermixing of forces, as well as the rapidly changing ground situation during the execution of a breakout,
  make close air support difficult.
  C-65. Engineers with the rupture force focus on mobility operations. Engineers with the follow and assume
  force or the reserve improve routes as necessary. Engineers supporting flank security elements focus on
  conducting countermobility operations. The rear guard must also have enough engineer support to conduct
  countermobility operations.
  C-66. The senior commander prioritizes supporting AMD assets to protect the rupture force, the rear guard,
  and the main body. This support may come from outside the encircled perimeter. The rear guard is second in
  priority of protection to help prevent enemy forces targeting the main body from overrunning it.
  C-67. Commanders can relieve sustainment shortfalls by using aerial resupply, ordering external forces to
  establish support areas, and using captured supplies. All units and vehicles carry the maximum supplies
  possible, with emphasis on carrying petroleum, oils, and lubricants and ammunition. The encircled force only