text: Rehearsals
  D-25. SHORAD battalion and batteries use this type of rehearsal rather than a full dress rehearsal as distances
  between batteries, platoons, and fire units likely preclude the gathering of all Soldiers and systems other than
  at home station or as the first rehearsal when time and resources are available. However, SHORAD units will
  participate in their supported assets' full-dress and key leader rehearsals and need to ensure all aspects of air
  defense are considered and integrated into these rehearsals.
  FULL-DRESS REHEARSAL
  D-26. A full-dress rehearsal produces the most detailed understanding of the operation. Every Soldier and
  system is involved in a rehearsal over terrain and weather conditions at least similar to that expected in the
  operation. A full-dress rehearsal helps Soldiers clearly understand what commanders expect of them.
  D-27. Full-dress rehearsals consume more time than any other rehearsal method. For batteries and platoons,
  full-dress rehearsals most effectively ensure all units in the operation understand their roles. However, as
  noted above, SHORAD battalions generally do not conduct full-dress rehearsals given the distances between
  subordinate units, though the battalion, batteries, and platoons will participate in their supported assets' full-
  dress rehearsals.
  OTHER REHEARSALS
  D-28. Each unit should plan rehearsals for the Soldiers to practice techniques and procedures associated with
  mission essential requirements. The following rehearsals apply to combat operations tasks:
  * Operation center drills. Combat requirements should be anticipated and rehearsed in the form of
  operation center and command post drills. The shift officer in charge is the rehearsal director.
  Examples of these battle drills include the OPORD, WARNORD, and fragmentary order receipt
  and dissemination; casualty evacuation; and resupply.
  * Engagement drills. SHORAD fire units and sensors should rehearse their engagement drills in
  their assigned position or in terrain similar to their expected position. This allows them to adapt
  their operations to the existing conditions.
  * Movement. SHORAD fire units and sensors should rehearse the movement techniques they expect
  to use in an operation. These rehearsals will occur with supported units as well to synchronize all
  the moving pieces in an operation. These rehearsals are especially useful in breaching and
  obstacle-crossing operations.
  REHEARSAL PLANNING
  D-29. Rehearsal planning is crucial in every operation. A hasty rehearsal is less effective than a deliberately
  planned and resourced rehearsal.
  D-30. Rehearsal time allotment must be considered up front. The SHORAD commander or leader decides
  which type of rehearsal to prepare for based on the planning and timeline work completed during the planning
  process. The most effective rehearsals are those that are planned from the receipt of the first WARNORD
  until rehearsal execution. Time lines are the most effective tool to aid in allocating time for events.
  D-31. When considering the total amount of time available and the 1/3-2/3 rule (1/3 of the time allocated to
  the higher headquarters and 2/3 to subordinate organizations), the rehearsal planner can determine the type
  of rehearsal the unit can afford to perform. In order for rehearsals to be mutually beneficial, the SHORAD
  leader should plan a rehearsal window that allows subordinates enough time to develop their own plans.
  D-32. Figure D-2 on page D-6, illustrates the level of planning and time line development necessary to
  determine when rehearsals can and should occur. This figure does not consider, however, the supported unit
  time line which will significantly complicate the process.