text: FM 7-100.1 ________________________________________________________________________________
  units. There are two methods for conducting reconstitution: reorganization
  and regeneration.
  Reorganization
  12-103. Reorganization is action taken to shift resources internally within a
  degraded unit to increase its level of combat effectiveness. Reorganization is
  normally done at unit level and requires only limited external support such
  as supply replenishment, maintenance assistance, and limited personnel
  replacement. When continuity of the mission is of paramount importance,
  composite units may be formed from other units reduced by combat
  operations.
  Regeneration
  12-104. Regeneration is action taken to rebuild a unit through large-scale
  replacement of personnel, equipment, and supplies. Additionally, it is action
  taken to restore C2 and conduct mission-essential training. Overall, the effort
  is directed at restoring the unit’s cohesion, discipline, and fighting
  effectiveness.
  PREPARING REINFORCEMENTS
  12-105. OPFOR strategic and operational logisticians prepare contingency
  plans for the mobilization and reception of reserve forces. Once the unit
  personnel and equipment are mobilized, they are sustained, configured, and
  transported to their respective OSC. Normally, strategic-level logistics units
  provide this type of support. Once units arrive at the OSC level, the OSC
  assumes responsibility for their further sustainment and transport.