text: ________________________________________________________________________________Chapter 12
  INTEGRATED SUPPORT GROUP
  12-42. The integrated support group (ISG) is a compilation of units
  performing logistics tasks that support the IFC in a constituent or dedicated
  command relationship. For organizational efficiency, various units
  performing other combat support and combat service support tasks might be
  grouped into the ISG, even though they may support only one of the major
  units or components of the IFC.
  12-43. There is no standard ISG organizational structure. The number, type,
  and mix of subordinate units vary based on the operational support situation.
  In essence, the ISG is tailored to the mission and the task organization of the
  IFC. An ISG can have many of the same types of units as shown in Figure 12-
  3 for one example of ISC subordinates, but tailored in size and functions to
  support the IFC.
  MATERIEL SUPPORT
  12-44. The OPFOR materiel support system comprises a mix of very modern
  and less modern capabilities that vary depending on the priority of the
  supported units. Generally, high-priority or elite units enjoy the benefits of a
  robust materiel support system that affords a higher degree of flexibility and
  responsiveness to rapid changes in plans. For such units, the system may be
  fully automated to track requirements and control the issue of supplies. Less
  capable units (including reserve and militia forces) typically have little or no
  automation support. Both types of materiel support system are based on
  allocating supplies and services to units in order to accomplish mission
  objectives. However, the aim of the OPFOR is to continue the upgrade of its
  less capable units to a robust supply system capable of sustaining the force in
  all environments.
  SUPPLY
  12-45. Supply includes actions to acquire, manage, receive, store, and issue
  the materiel required to equip and sustain the force from deployment through
  combat operations and recovery into State territory. The allocation of
  supplies is based on the unit mission, supply reports, and the availability of
  supplies.
  SERVICES
  12-46. The OPFOR concept of services includes all troops, installations, and
  duty positions that perform logistics support for combat arms units. Such
  services are not specific to the ground forces, but support other Armed Forces
  components as well.
  METHODS OF DISTRIBUTION
  12-47. During peacetime, the OPFOR operates under the “pull system” of
  supply. For example, units in the field may request materiel from a depot
  where they must pick it up and deliver it to the field. During wartime,
  however, the OPFOR operates under the forward distribution or “push
  system” principle, in which the higher echelon directly supplies and services
  the next-lower echelon. Supplies and services are delivered directly to