text: Fire Support and the Operations Process
  A rehearsal is an effective organizational tool in gaining support, improving strategic and operational
  understanding, and fostering mutual trust within a commander's sphere of control. The commander and staff
  are able to visualize the terrain, and enemy and friendly units arranged by military action in time, space, and
  purpose. For more information on rehearsals see FM 6-0.
  3-81. Each rehearsal type achieves a different result and has a specific place in the preparation timeline.
  Once a rehearsal is complete subordinate leaders must backbrief the commander. The four types of rehearsals
  are the:
  * Combined arms rehearsal.
  * Support rehearsal.
  * Battle drill or SOP rehearsal.
  * Conduct CP displacement rehearsals.
  3-82. Fire support personnel are involved in every type of rehearsal. Multiple rehearsals ensure that
  maximum integration and synchronization in supporting the scheme of maneuver with fires. When time is
  limited, the number and scope of rehearsals are reduced. In these cases, rehearsals may focus on EFSTs or
  aspects of the supported commander’s plan and the associated FS plan. The FS rehearsal, in coordination
  with the FA technical rehearsal, should be conducted prior to the combined arms rehearsal and if possible,
  include members of the operations and intelligence staff and other members of the targeting team.
  3-83. Rehearsals are based on a completed OPORD. Units may rehearse a contingency plan to prepare for
  an anticipated deployment. The rehearsal is a coordination event, not an analysis. It does not replace war-
  gaming. Commanders avoid making major changes to OPORDs during rehearsals. They make only those
  changes essential to mission success and risk mitigation. Risk management is the process to identify, assess,
  and mitigate risks and make decisions that balance risk cost with mission benefits (JP 3-0). For more
  information on risk management see ATP 5-19.
  BACKBRIEF
  3-84. A backbrief is a briefing by subordinates to the commander to review how subordinates intend to
  accomplish their mission (FM 6-0). These briefs allow commanders to clarify the commander's intent early
  in subordinate planning. Commanders use the backbrief to identify any problems in the concept of operations
  and to increase understanding and synchronization through the passage of information. At a minimum the
  FSCOORD should cover the following items during the backbrief:
  * Commander's guidance for fires.
  * Initial scheme of fires.
  * Priorities of fires by phase.
  * HPTs.
  * Initial FSCM recommendations.
  * Command and support relationship recommendations.
  3-85. Backbriefs should not be confused with confirmation briefs that commanders use immediately after
  issuing a plan to determine how well a subordinate commander understands the mission, task, and/or
  directive. It differs from a confirmation brief in that leaders are given time to complete their plan rather than
  briefing the commander immediately following receipt of an order. Typically, the confirmation brief occurs
  at the conclusion of the orders or OPLAN brief when all subordinate commanders are available. The
  commander adjourns the session only when they are confident their subordinates understand their mission,
  and assigned task and purpose, the commander's intent and the higher commander's intent, the concept of
  operation, scheme of maneuver, priorities, the time plan, and type and location of rehearsals.
  COMBINED ARMS REHEARSAL
  3-86. The combined arms rehearsals are conducted from corps to BN echelon. The fire support plan must be
  integrated into the combined arms rehearsal. Key fire support personnel representing or supporting the fire
  support system at the combined arms include the FSCOORD, DFSCOORD, DIVARTY or FAB FSE, JAGIC
  personnel, BCT FSOs (as available), air defense airspace management and brigade aviation element, ALO,