text: Sustainment Operations During Crisis
  4-26. Mass casualties must be included in the planning process, as well as processing large-scale
  replacements. Mass casualty is defined as any number of human casualties produced across a period of time
  that exceeds available medical support capabilities (JP 4-02). The ASCC G-1 must continuously coordinate
  with the corps/divisions for proper personnel replacement flow in theater with allocated personnel
  replacement seats in the TPFDD. During large-scale combat operations, the Army’s theater planners may
  anticipate a sustained percentage of casualties each day. The percentage of casualties per day will be based
  on the total number of deployed forces. These casualties will vary in severity of injury and represent killed
  in action, wounded in action, and disease and non-battle injuries. Army HR planners should anticipate having
  to replace the total casualties killed in action, captured, missing in action, wounded in action, and disease and
  non-battle injury. Army medical planners should anticipate having to support the total casualties that are
  wounded in action and disease and non-battle injuries.
  Note. Medical is responsible for wounded in action and disease and non-battle injuries.
  Sustainment is responsible for killed in action.
  4-27. The ASCC G-1/AG is responsible for developing personnel replacement requisitions as part of the
  deliberate planning process. HRC assists Army commands in developing personnel replacement force
  packages by using a reinforcement sourcing process. This process guides collectively trained Soldiers in
  crews, teams, or squads to combat in a manner that preserves their morale and fighting spirit, benefiting them
  and the units they join. See ADP 4-0, FM 1-0, and ATP 4-93 for more details.
  ARMY HEALTH SYSTEM SUPPORT DURING CRISIS
  4-28. Army operations during crisis are designed to prevent adversary opportunities to further exploit
  positions of relative advantage. AHS support, through synchronization and integration by the TMC, is a
  critical asset in the ASCC commander’s mission to prevent/deter the escalation of future combat and
  positively impact the wellbeing of the host-nation population. Key AHS activities during crisis include the
  provision of medical support to flexible deterrence/response options and setting the theater for possible
  escalation. Medical planners continue support to the theater campaign plan and provide medical support to
  force projection activities.
  4-29. During the transition to crisis, the surgeon sections at each echelon conduct planning refinement,
  coordination, synchronization, and integration of AHS support to flexible deterrence/response options. These
  options range from mobilization, force tailoring, repositioning forward-stationed medical assets, providing
  the medical plan for forces in-transit, and/or employing expeditionary medical assets. Surgeon sections at
  EAB derive or refine medical support requirements based on G-1 new or revised casualty estimates and
  modify medical plans for capability and capacity sufficiency.
  4-30. Surgeon sections at EAB assess, plan, and coordinate medical activities in support of setting the theater
  in anticipation of possible expansion of theater operations. This includes continued evaluation of health
  threats, leveraging regional medical agreements, and procuring support to expanded medical operations.
  Theater-level medical command organizations or agencies, such as Defense Health Agency, continue
  conducting home station activities to maintain health readiness, support contingencies, and reassess the
  sufficiency of AHS capability generation to support rotational, expeditionary, and escalation force structures
  for contingency operations. As required, theater-level medical commanders provide medical support to
  enable the RSOI of incoming medical units. The chain of command for forward-positioned, rotational, and
  expeditionary operational medical units executes AHS support in accordance with established plans.
  MEDICAL PLANNING TOOLS
  4-31. The Joint Medical Planning Tool, the Medical Planners' Toolkit, and the Medical Contingency
  Requirements Workflow are planning tools approved for calculation of medical requirements. The Joint
  Medical Planning Tool and Medical Planners' Toolkit are fully integrated for versatility and enhanced
  medical planning efficiency.
  4-32. The Joint Medical Planning Tool is a computer-based simulation tool developed by the Naval Health
  Research Center. It supports research, medical systems analysis, operational risk assessment, and field
  medical services planning. The Joint Medical Planning Tool is based on empirical data, including over 400