text: Army Tactics
  accommodate aerial resupply, preparing to receive the load such as the right material handling equipment,
  and returning non-expendable equipment such as cargo pallets, sling-load equipment, or containers.
  Health Service Support
  1-159. Health service support encompasses all support and services performed, provided, and arranged by
  Army Medicine to promote, improve, conserve, or restore the behavioral and physical well-being of
  personnel by providing direct patient care that includes medical treatment (organic and area support),
  hospitalization, medical evacuation to include medical regulating, and medical logistics to include blood
  management (FM 4-02). Health service support also includes the treatment of CBRN patients and as directed,
  provides support to other Services, agencies, and organizations. (See FM 4-02 for additional information for
  health service support).
  Medical Treatment (Organic and Area Support)
  1-160. The medical treatment function encompasses Roles 1 and 2 medical treatment support. These roles
  of care are provided by organic assets (medical platoons in battalions and treatment teams assigned to
  sustainment units) or on an area support basis from supporting medical companies or detachments. Within
  the BCTs and echelons above brigade Army Health System units, this support is provided by the medical
  company (brigade support) and the medical company (area support). The area support mission encompasses
  routine sick call and support provided by all ten medical functions. (See FM 4-02 for additional information
  on medical treatment).
  Hospitalization
  1-161. Theater hospitalization provides essential care within the theater evacuation policy to either return a
  patient to duty or stabilize a patient for evacuation to a definitive care facility outside the AO. A hospital is
  a medical treatment facility capable of providing inpatient care. The Role 3 hospital centers execute the
  theater hospitalization mission. The Role 3 medical treatment facilities are appropriately staffed and equipped
  to provide diagnostic and therapeutic services, as well as the necessary supporting services required to
  perform its assigned mission and functions. (See ATP 4-02.10 for additional information on hospitalization).
  Medical Evacuation
  1-162. Medical evacuation is the timely and effective movement of the wounded, injured, or ill to and
  between medical treatment facilities on dedicated and properly marked medical platforms with enroute care
  provided by medical personnel (ATP 4-02.2). Medical evacuation (MEDEVAC) refers to both ground and
  air evacuation of casualties and joint or partnered air evacuation elements. Air MEDEVAC employs air assets
  from the air ambulance companies assigned to the combat aviation brigade to evacuate casualties. Leaders
  must consider the basic tenets that influence the employment of MEDEVAC assets. These factors include
  the—
  * Patient’s medical condition.
  * Forces employment.
  * Enemy’s anticipated course of action and air defense capabilities.
  * Anticipated patient load.
  * Expected areas of patient density.
  * Availability of MEDEVAC resources to include ground and air crews.
  * Availability, location, and type of supporting medical treatment facilities.
  * Adherence to the protections afforded to medical personnel, patients, medical units, and medical
  transports under the provisions of the Geneva Conventions.
  * Unit airspace plan.
  * Obstacle plans.
  * Fire support plan (to ensure MEDEVAC assets are not dispatched onto routes and at the times
  affected by the fire support mission).
  * Road network or dedicated MEDEVAC routes (contaminated and clean).