text: _________________________________________________________________________________FM 2-22.3
  6-14. When a detainee is in-processed into an internment facility, MPs will
  assign the detainee’s status as an EPW, retained person, protected person, or
  other status under the Geneva Conventions. Figure 6-2 provides excerpts
  from FMI 3-19.40 on MP internment and resettlement operations. In an
  international conflict, individuals entitled to POW status (EPWs) include—
  • Members of the regular armed forces.
  • Other militias or volunteer corps, and organized resistance movements
  of a State Party to a conflict, provided they meet each of the following
  criteria:
  Commanded by a person responsible for his subordinates.
  ■
  Having a fixed distinctive sign recognizable at a distance.
  ■
  Carrying arms openly.
  ■
  Conducting operations in accordance with the law of war.
  ■
  • Civilians who accompany the force.
  • Crew members of the merchant marine and crews of civilian aircraft of
  a State Party to the conflict, who do not benefit by more favorable
  treatment under any other provisions of international law.
  6-15. There are other categories specified in Article 4, GPW. Questions with
  respect to an individual’s entitlement to EPW status should be directed to
  your SJA.
  6-16. Retained personnel (see Articles 24 and 26, GWS):
  • Official medical personnel of the armed forces exclusively engaged in
  the search for, or the collection, transport or treatment of wounded or
  sick, or in the prevention of disease, and staff exclusively engaged in
  the administration of medical units and facilities.
  • Chaplains attached to the armed forces.
  • Staff of National Red Cross Societies and that of other Volunteer Aid
  Societies, duly recognized and authorized by their governments to
  assist Medical Service personnel of their own armed forces, provided
  they are exclusively engaged in the search for, or the collection,
  transport or treatment of wounded or sick, or in the prevention of
  disease, and provided that the staff of such societies are subject to
  military laws and regulations.
  6-17. Protected persons include civilians entitled to protection under the GC,
  including those we retain in the course of a conflict, no matter what the
  reason. A “civilian internee” is a person detained or interned in the United
  States or in occupied territory for security reasons, or for protection, or
  because they have committed an offense against the detaining power, and
  who is entitled to “protected person” status under the GC.
  6-18. The term “detainee” may also refer to enemy combatants. In general,
  an enemy combatant is a person engaged in hostilities against the United
  States or its coalition partners during an armed conflict. The term “enemy
  combatant” includes both “lawful enemy combatants” and “unlawful enemy
  combatants.”
  • Lawful enemy combatants: Lawful enemy combatants, who are
  entitled to protections under the Geneva Conventions, include
  members of the regular armed forces of a State Party to the conflict;