text: _________________________________________________________________________________FM 2-22.3
  treatment of detainees as do Army personnel. All personnel who observe or
  become aware of violations of Army interrogation operation standards will
  report the infractions immediately to the commander. The personnel who
  become aware of mistreatment of detainees will report the infractions
  immediately and suspend the access of non-DOD personnel to the facility
  until the matter has been referred to higher headquarters. Non-DOD
  personnel conducting interrogation operations in an Army facility must sign
  a statement acknowledging receipt of these rules, and agree to follow them
  prior to conducting any interrogation operations. Non-DOD personnel
  working in DOD interrogation facilities have no authority over Army
  interrogators. Army interrogators (active duty, civilian, or contractor
  employees) will only use DOD-approved interrogation approaches and
  techniques.
  FOREIGN GOVERNMENT INTERROGATORS
  5-56. Foreign governments may request to participate, or may be invited to
  participate in interrogations in Army facilities. Requests for foreign
  government access to detainees will be forwarded through the operational
  chain of command for appropriate action pursuant to DOD policy. Foreign
  government personnel must comply with US DOD policies and observe the
  same standards for the conduct of interrogation operations and treatment of
  detainees as do Army personnel. The interrogation activity commander will
  assign a trained and certified interrogator to escort foreign government
  interrogators to observe their interrogation operations. The foreign
  government personnel will sign for any detainee they want to question from
  the MPs, following the same established procedures that US DOD personnel
  must follow. In all instances, interrogations or debriefings conducted by
  foreign government interrogators will be observed by US DOD personnel. In
  all instances, foreign government interrogators must observe the same
  standards for the conduct of interrogation operations and treatment of
  detainees as do US Army personnel.
  MP FUNCTIONS IN ASSOCIATION WITH INTERROGATION OPERATIONS
  5-57. MP and MI personnel both have responsibilities with regard to
  EPW/detainees, but with different goals and responsibilities. (See DOD
  Directive 3115.09.) Therefore, close coordination must occur between MP and
  MI personnel in order to facilitate the effective accomplishment of the MP
  and MI missions. Both MP and MI personnel must ensure that they treat
  detainees in accordance with the baseline standards of humane treatment.
  5-58. MPs are responsible for the humane treatment, evacuation, custody
  and control (reception, processing, administration, internment, and safety) of
  detainees; force protection; and the operation of the internment facility,
  under the supervision of the provost marshal. The MPs do not conduct
  intelligence interrogations. Intelligence interrogation is strictly a HUMINT
  function. DOD policy requires that all detainees in its control, whether or not
  interrogation has commenced, are assigned an internment serial number as
  soon as possible, normally within 14 days of capture. (See AR 190-8.)