text: FM 2-22.3
  Appendix D
  S2 Guide for Handling Detainees, Captured Enemy
  Documents, and Captured Enemy Equipment
  D-1. Detainees, retained personnel, CEDs, and CEE are critical sources of
  combat intelligence. Often the Maneuver Battalion S2 is the first MI officer
  to encounter these sources. His actions are critical to the exploitation system.
  Information from these items is time sensitive, and these information sources
  need to be exploited at as low an echelon as possible. The S2 should
  anticipate requirements for support based on planned missions and request
  HUMINT collector support as necessary. If unable to receive HUMINT
  collector support, the S2 must be prepared to exploit these sources of
  information to the best of his ability and more importantly expedite their
  evacuation to locations and units where they can be exploited.
  PURPOSE
  D-2. This guide is for battalion and brigade S2s. It explains standard
  procedures on what the S2 should do when his unit—
  • Captures an enemy soldier or other detainee.
  • Encounters a civilian on the battlefield.
  • Finds or captures an enemy document.
  • Discovers an unusual enemy weapon or other unusual piece of
  equipment during tactical operations.
  PERSONNEL HANDLING
  D-3. The GPW defines persons entitled to treatment as prisoners of war upon
  capture, in Article 4 (see Appendix A, Section I).
  D-4. The GC defines the civilian population (exclusive of those civilian
  persons listed in GPW, Article 4) who benefit to varying degrees from the
  provisions of the Geneva Conventions. (See Appendix A, Sections II and III.)
  D-5. Persons in each of these categories have distinct rights, duties, and
  restrictions. Persons who are not members of the Armed Forces, as defined in
  Article 4, GPW, who bear arms or engage in other conduct hostile to the
  enemy thereby deprive themselves of many of the privileges attaching to the
  members of the civilian population. The capturing unit treats all combatants
  and noncombatants who are suspected of being part of the threat force as
  EPWs or retained personnel until their status can be determined. This
  determination normally occurs at the detainee collection point or at a higher
  echelon. Noncombatants are handled, questioned, detained, evacuated, and
  released in accordance with theater policy. In all cases, detainees are treated
  humanely.