text: Chapter 9
  operations as far forward as possible. They continue to resist enemy supporting efforts, such as the enemy’s
  reconnaissance effort, thereby upsetting the enemy’s coordination and allowing MBA units to fight one
  engagement or battle at a time. Doing this increases the chances for success even if the enemy attack
  penetrates the MBA in one or more areas. In some cases, security forces can attack enemy elements from the
  rear, engage high-payoff targets, or operate between echelons to isolate leading enemy units.
  9-115. Commanders may order security force information collection assets to displace to one or both sides
  of an enemy penetration and continue to maintain observation of enemy forces approaching the MBA. These
  information collection assets can facilitate friendly counterattacks by observing and providing access to the
  enemy force’s flanks. Alternatively, units may plan to monitor those areas where enemy forces have not
  advanced into the MBA solely by technical means to prevent the isolation and possible encirclement of these
  assets.
  9-116. Units coordinate battle handover between their security forces and MBA forces as quickly and
  efficiently as possible to minimize vulnerability to enemy fire. Security forces need to retain freedom of
  maneuver until the start of their passage of lines. Fire support assets help cover the withdrawal of these
  security forces. Support and sustainment elements of the security force leave the security area as early as
  possible to avoid hampering the movement of maneuver forces. Normally, the security force hands off the
  battle to the nearest MBA force.
  9-117. Units consider their security force’s next mission before initiating battle handover between their
  security and MBA force. Factors that may affect this decision are the status of their security forces, their
  subsequent mission preparation requirements, and the size and nature of the reserve required by the situation.
  Commanders may decide to employ their security forces immediately as their reserve, which would release
  their initial reserves for other tasks. Alternately, they may decide to use their security forces to conduct
  additional security operations on the flanks of MBA forces as a battle progresses. However, it may be some
  time before a given security force is ready for commitment. Therefore, units more often wait until their
  security forces reconstitute and they commit their initial reserves before designating their former security
  forces as their new reserves.
  9-118. Units plan the location of their security forces assembly areas on the follow-on missions they assign
  to those security forces. They locate those assembly areas to rapidly support their ongoing operations yet
  keep withdrawn security units from interfering with ongoing decisive and shaping operations. After passage,
  their security forces normally move to these locations to prepare for subsequent operations. At a minimum,
  units rearm and refuel their security forces as soon as possible after their relief from the security mission.
  Additional sustainment concerns include casualty evacuation, maintenance requirements, and resupply of
  other classes of supply.