text: Intelligence Operations
  6-60. TACON limits the gaining commander’s authority to the detailed direction and control of
  maneuver/movement necessary to accomplish the missions or tasks assigned. TACON does not provide authority
  to change the organizational structure of the augmenting asset or direct administrative or logistics support.
  SUPPORT RELATIONSHIPS
  6-61. Commanders establish support relationships (table 6-2) when subordination of one unit to another is
  inappropriate, such as when limited MI collection capabilities must support multiple units. Support
  relationships provide the greatest flexibility to distribute collection assets across an AO. Support relationships
  are graduated from an exclusive supported and supporting relationship between two units—as in DS—to a
  broad level of support extended to all units under the control of the higher headquarters—as in general support
  (GS). Support relationships do not normally alter ADCON. Intelligence operations normally use two support
  relationships:
  ⚫ Direct support is a support relationship requiring a force to support another specific force and
  authorizing it to answer directly to the supported force’s request for assistance (FM 3-0).
  ⚫ General support is support given to the supported force as a whole and not to any particular
  subdivision thereof (JP 3-09.3).
  Table 6-2. Army support relationships
  Then the following are inherent responsibilities:
  Authorities
  CDR can
  Are
  impose on
  If the Have May be assigned Establish and Have
  relationship command task- Receive position or Provide maintain priorities gaining unit
  sustainment liaison further
  is— relationship organized area of communications established
  from— to— command
  with— by— operations with— by—
  or support
  by—
  relationship
  of
  Supported Supported Parent unit; Supported
  Direct support1 Parent HQ Parent HQ Parent HQ See note.
  HQ HQ supported HQ HQ
  Reinforced
  Reinforced Reinforced Parent HQ;
  Reinforcing Parent HQ Parent HQ Parent HQ HQ; then N/A
  HQ HQ reinforced HQ
  parent HQ
  Reinforced
  Parent HQ;
  General HQ and as Reinforced HQ
  then
  support- Parent HQ Parent HQ Parent HQ Parent HQ required and as required N/A
  reinforced
  reinforcing by parent by parent HQ
  HQ
  HQ
  As
  required As required by
  General support Parent HQ Parent HQ Parent HQ Parent HQ Parent HQ N/A
  by parent parent HQ
  HQ
  Note. Commanders of units in direct support may further assign support relationships between their subordinate units and elements of the
  supported unit after coordination with the supported commander.
  CDR commander HQ headquarters N/A not applicable
  6-62. In all support relationships, the parent unit is responsible for sustainment. Conditions may exist in
  which sustainment by the parent unit is not possible because of time, distance, or threats. In these cases, the
  plan or order directing the support relationship can direct the supported unit to provide sustainment for the
  supporting unit.
  OTHER RELATIONSHIPS
  6-63. Higher-echelon headquarters have established several other relationships with units that are not
  command or support relationships. These relationships are limited or specialized to a greater degree than
  command and support relationships, and they may be detailed in a command’s implementing directives.
  Limited relationships are not used when tailoring or task-organizing Army forces. Using specialized
  relationships assists in clarifying certain aspects of OPCON or ADCON. Table 6-3 on page 6-16 lists other
  relationships.