3-93. Reconstitution consists of two major elements—reorganization and regeneration. Reorganization is the expedient cross-leveling of internal resources within an attrited unit in place to restore necessary combat effectiveness and maintain endurance. Regeneration is the intentional restoration of a unit’s combat power that requires time and resource intensive operations which includes equipment repairs/replacements, supply replenishment, mission essential training, and personnel replacements in accordance with theater commander guidance. See appendix C of FM 4-0 for additional details on reconstitution.