text: Field Artillery Operations
  Table 4-1. The Seven Field Artillery inherent responsibilities in Army support relationships
  Answers
  Has its
  Army calls for Has as its Furnish Establish Is
  Furnishes fires
  support fire in zone of liaison COMM Positioned
  (FIST): planned
  relationship priority fire: officer: with: by:
  by:
  from:
  1.
  Provides
  Supported
  unit. AO of temporary Supported Supported Supported
  Direct REP for HQ and
  2. supported No RQMNT unit or FFA unit or FFA
  Support casualty FSO as
  Own unit. losses as required HQ HQ
  Observers.1
  required
  3.FA HQ2
  1.
  Reinforced Zone of To Reinforced
  FA fire of reinforced FA unit HQ Reinforced Reinforced
  Reinforcing No RQMNT FA unit HQ
  2.Own Reinforced or as FA unit HQ. FA unit HQ
  or as
  Observers.1 FA. required. required
  3.FA HQ2
  1.
  AO of
  Supported
  supported 1.
  unit. To 1.
  unit to Reinforced Supported
  General 2.FA HQ.2 include reinforced FA unit HQ Supported unit.
  Support 3. No RQMNT FA unit HQ unit.
  zone of or as
  Reinforcing Reinforced or as 2.FFA
  unit. fire of required. required HQ.2 2.FFA
  reinforced HQ.2
  4.Own
  FA unit.
  Observers.1
  1.
  Supported 1. 1.
  unit AO of FFA HQ or Supported Supported
  General Supported No RQMNT No RQMNT Supported unit. unit.
  Support 2.FFA HQ 2
  unit. Unit 2.FFA 2.FFA
  3.Own HQ.2 HQ.2
  Observers
  Note: (1). Includes all target acquisition means not deployed with the supported unit. In NATO, the gaining unit may not
  task-organize.
  Note: (2). If designated by the support commander.
  AO – area of operation, COMM – communications, FA – field artillery, FFA – force field artillery, FIST – fire support team,
  FSO – fire support officer, HQ – headquarters, REP – replacement, RQMNT -- requirement
  NONSTANDARD FIELD ARTILLERY SUPPORT RELATIONSHIPS
  4-63. Commanders sometimes use a nonstandard support relationship. In many cases, this is simply a
  variation of a standard support relationship (DS, R, GSR, or GS) when there are not sufficient FA assets to
  cover all the contingencies, or if a FA unit is assigned more than one support relationship over a time period.
  4-64. A nonstandard support relationship is also a means by which the commander can tailor his FA assets
  in anticipation of future operations. A nonstandard support relationship may involve limitations or guidance
  concerning ammunition, positioning, or other critical factors. Examples of nonstandard FA support
  relationships include:
  * 110 FAB: GSR 7 FAB; do not exceed 25 percent of the CSR in support of 7 FAB.
  * 1-89 FA (MLRS, M270A1): GS; provide liaison officer to the corps FSE.