text: Rehearsals
  D-50. The rehearsal director frees the commander to command and participate rather than run a rehearsal.
  While the SHORAD battalion conducts its rehearsal, the SHORAD battery and platoons should also rehearse
  with their leaders and with the supported unit. Final changes are made to the execution matrix following
  rehearsals, and WARNORDs are issued to reflect any necessary changes.
  D-51. The following example outlines a step-by-step process for conducting a rehearsal:
  * Step 1. Start at the appointed time and conduct a formal roll call. Ensure everyone brings
  binoculars, maps, and necessary equipment.
  * Step 2. Ensure the rehearsal director orients the map, sketch-map, or terrain model to the actual
  ground. Generally describe and point out the overall AO and explain the markers used on the
  terrain model.
  * Step 3. Brief the time line. Designate the rehearsal start time. For example, have the rehearsal
  begin by depicting the anticipated situation one hour before leaving the line of departure. Set the
  time interval to be used to start and track the rehearsal: in effect, specify a ten-minute interval to
  equate to one hour of real time during operation.
  * Step 4. Highlight the ground rules and incorporate ground rules into the unit SOP. Include who
  controls the rehearsal, who actually walks the terrain, how the rehearsal will be controlled, and
  when staff officers brief.
  * Step 5. The S-3 (or executive officer at battery level) reads the mission statement, the commander
  reads the commander's intent, and the S-3 or executive officer lays out the friendly situation as it
  currently exists, using the map, sketch-map, or terrain model.
  * Step 6. The S-2 (or executive officer at battery level) briefs the current enemy situation. The S-2
  then briefs the most likely enemy course of action (the enemy situation should already be set up
  on the map or terrain model). The S-2 also briefs the status of the reconnaissance and surveillance
  plan, for example, citing the most recent early warning tracks.
  * Step 7. The S-3 (or executive officer at battery level) briefs friendly maneuver unit dispositions at
  the rehearsal start time, including sensor positions. Other staff officers brief their subordinate unit
  positions at the start time, as well as any particular points of emphasis.
  * Step 8. The commander gives appropriate commands. Battery commanders and or platoon leaders
  tell when they occupy positions and anticipate an air attack. The executive officer talks for any
  staff section not present and ensures all actions listed on the synchronization matrix or decision
  support template are addressed at the proper time or event. Avoid re-wargaming except as
  absolutely necessary to ensure subordinate unit commanders fully understand the plan. If the staff
  has developed an order that addresses contingencies, there is little need to re-wargame the
  operation at the rehearsal site.
  * Step 9. The S-2 (or executive officer at the battery level) portrays the enemy. The S-2 section
  describes the enemy's most likely and most dangerous courses of action (situation template),
  pointing out enemy air avenues of approach, possible aerial targets, landing and drop zones in the
  unit’s area, reconnaissance routes, objectives, security force composition and locations, probable
  main force objectives, likely chemical, biological, radiological, and nuclear attack times and
  locations, and the commitment of reserves. The S-2 must be specific by tying enemy actions to
  specific terrain or friendly unit actions. The walk-through should be an accurate portrayal of an
  event template.
  * Step 10. Terminate the first phase of the rehearsal after the desired end state (from the
  commander's intent) is achieved. In the defense, this is usually after the decisive action, such as
  destruction of the air threat or withdrawal of the enemy.
  * Step 11. When it becomes obvious that additional coordination is required to ensure success of the
  operation, try to immediately accomplish it. This coordination is one of the key points of the
  rehearsal. Make sure it is clearly understood by all participants and captured by the recorder and
  all changes to the published operation order are in effect. As soon as possible, the S-3 (or executive
  officer at the battery level) should collect the verbal fragmentary orders and incorporate as written
  changes to the operation order.
  * Step 12. After the initial review of the base order, recheck the situation at the initial decision point.
  State the criteria for a decision to change the plan.