text: FM 2-22.3
  Appendix M
  Restricted Interrogation Technique – Separation
  INTRODUCTION
  M-1. As part of the Army's efforts to gain actionable intelligence in the war
  on terrorism, HUMINT collectors may be authorized, in accordance with this
  appendix, to employ the separation interrogation technique, by exception, to
  meet unique and critical operational requirements. The purpose of separation
  is to deny the detainee the opportunity to communicate with other detainees
  in order to keep him from learning counter-resistance techniques or
  gathering new information to support a cover story; decreasing the detainee's
  resistance to interrogation. Separation, further described in paragraphs M-2
  and M-28, is the only restricted interrogation technique that may be
  authorized for use. Separation will only be used during the interrogation of
  specific unlawful enemy combatants for whom proper approvals have been
  granted in accordance with this appendix. However, separation may not be
  employed on detainees covered by Geneva Convention Relative to the
  Treatment of Prisoners of War (GPW), primarily enemy prisoners of war
  (EPWs). The separation technique will be used only at COCOM-approved
  locations. Separation may be employed in combination with authorized
  interrogation approaches—
  • On specific unlawful enemy combatants.
  • To help overcome resistance and gain actionable intelligence.
  • To safeguard US and coalition forces.
  • To protect US interests.
  GENERAL
  M-2. This appendix provides doctrinal guidance for the use of separation as
  an interrogation technique. Separation involves removing the detainee from
  other detainees and their environment, while still complying with the basic
  standards of humane treatment and prohibitions against torture or cruel,
  inhuman, or degrading treatment or punishment, as defined in the Detainee
  Treatment Act of 2005 and addressed in GPW Article 3 (Common Article III).
  Separation is to be distinguished from segregation, which refers to removing
  a detainee from other detainees and their environment for legitimate
  purposes unrelated to interrogation, such as when necessary for the
  movement, health, safety and/or security of the detainee, or the detention
  facility or its personnel. This appendix—
  • Will be reviewed annually and may be amended or updated from time
  to time to account for changes in doctrine, policy, or law, and to address
  lessons learned.
  •
  Is not a stand-alone doctrinal product and must be used in conjunction
  with the main portion of this manual.