text: FM 2-22.3 _________________________________________________________________________________
  Table 4-2. Army Command and Support Relationships.
  INHERENT RESPONSIBILITIES ARE:
  IF Establishes/ Gaining Unit
  RELATIONSHIP Has May Be Receives Assigned Provides Maintains Has Priorities Can Impose
  IS: Command Task CSS Position or Liaison Communica- Established Further Com-
  Relation- Organized mand or Sup-
  from: AO By: To: tions by:
  ship with: by: port
  with:
  Relationship of:
  As re- Attached;
  Gaining Gaining Gaining Gaining quired by Unit to which OPCON;
  Attached Gaining unit
  unit unit unit unit gaining attached TACON; GS;
  unit GSR; R; DS
  Parent unit
  and gaining
  unit; gain- As re- As required by
  OPCON;
  Gaining ing unit Parent Gaining quired by gaining unit
  OPCON Gaining unit TACON; GS;
  unit may pass unit unit gaining and parent
  GSR; R; DS
  OPCON to unit unit
  lower HQ.
  Note 1
  As re- As required by
  Gaining Parent Gaining quired by gaining unit
  TACON Parent unit Gaining unit GS; GSR; R; DS
  unit unit unit gaining and parent
  unit unit
  DNAMMOC
  As re-
  Parent Gaining quired by As required by Not
  Assigned Parent unit Parent unit Parent unit
  unit unit parent parent unit Applicable
  unit
  Direct Sup-
  Parent Supported Parent unit;
  Support Parent unit Parent unit ported Supported unit Note 2
  unit unit Supported unit
  (DS) unit
  Reinforc- Rein- Reinforced
  Parent Reinforced Parent unit; Not
  ing Parent unit Parent unit forced unit: then
  unit unit reinforced unit Applicable
  (R ) unit parent unit
  Rein-
  forced
  General Reinforced
  unit and Parent unit;
  Support Parent unit and as Not
  Parent unit Parent unit Parent unit as re- then
  Reinforc- unit required by Applicable
  quired by reinforced unit
  ing (GSR) parent unit
  parent
  unit
  TROPPUS
  As re-
  General
  Parent quired by As required by Not
  Support Parent unit Parent unit Parent unit Parent unit
  unit parent parent unit Applicable
  (GS)
  unit
  NOTE 1. In NATO, the gaining unit may not task organize a multinational unit (see TACON).
  NOTE 2. Commanders of units in DS may further assign support relationships between their subordinate units and elements
  of the supported unit after coordination with the supported commander.