text: Army Sustainment at Echelon
  support or general support. Section I of this chapter described in greater detail the organizations responsible
  for integrating and synchronizing support in the strategic support area.
  JOINT SECURITY AREA
  2-149. Discussion of each type of Army headquarters assumes employment in the joint security area. All
  units may or may not be employed. Within the joint security area, sustainment command relationships will
  normally be the following:
  • The TSC is assigned to the theater Army.
  • The ESC is attached to the TSC.
  • Sustainment brigades are attached to the ESC. The sustainment brigades will have the same
  relationship with the TSC if an ESC is not employed in the joint security area.
  • CSSBs are attached to the sustainment brigade.
  • Functional logistics and HR companies are attached to the CSSB or special troops battalion.
  • Theater finance battalions are attached to ESCs or sustainment brigades.
  2-150. Operational medical units also operate in the joint security area. Within the joint security area, medical
  command relationships are normally the following:
  • The TMC is assigned to the theater Army.
  • Task-organized medical formations in the joint security area are assigned to the MEDBDE (SPT)
  or TMC.
  • The MLMC forward team is assigned to the TMC and collocates with the DMC of the TSC or ESC
  to coordinate medical materiel management and distribution. The MLMC forward team may be
  further task-organized based on mission orders.
  • Elements of the global medical field laboratory may be in general support of the theater Army and
  may be assigned to the TMC or MEDBDE (SPT).
  CORPS AREA
  2-151. The task organization of sustainment units in the corps area may be complex. Multiple sustainment
  headquarters may be operating in the area. In addition to the CSC, there could be other ESCs and sustainment
  brigades operating in the corps area. An example of this is an ESC operating in the corps area that supports
  the TSC and theater level sustainment operations.
  2-152. A CSC is assigned to the corps. The theater Army may also attach one or more sustainment brigades
  to the CSC. Furthermore, CSSBs, functional logistics battalions, and functional companies will be attached
  to the sustainment brigades as required to support the corps mission. All command and support relationships
  will be designated in an OPORD issued by the theater Army. The units attached to the corps receive mission
  orders from the corps headquarters, normally in support of specific corps operations. The normal support
  relationship for all sustainment units in the corps area is general support. However, other support relationships
  may be designated based on mission requirements.
  2-153. Other ESCs operating in the corps area will remain attached to the TSC and will also have sustainment
  brigades, CSSBs, functional logistics battalions, and functional logistics companies attached. Sustainment
  units not attached to the corps receive mission orders from the TSC to support broader theater operations.
  2-154. The task organization of medical units in the corps area is also complex. Multiple medical command
  and control headquarters may be operating in the area. Medical command and control headquarters are
  generally in a general support relationship with the corps. However, medical units may be further task-
  organized and other support relationships may be designated to ensure that medical commanders have
  freedom of action to adjust their units as needed due to changes in mission requirements. Within the corps,
  medical command relationships will normally be the following:
  • The TMC is assigned to the ASCC and provides direct or general support to the corps through the
  MEDBDE (SPT).
  • MEDBDEs (SPT) provide direct or general support to the corps and may have hospital centers,
  medical battalions (multifunctional), and separate medical and dental companies or veterinary
  detachments assigned.
  • MMBs may have medical companies, detachments, and teams assigned.
  • Role 3 hospital centers may have field hospitals and hospital detachments and teams assigned.