text: FM 2-22.3 ____________________________________________________________________________________
  Prisoners of war shall continue to have the benefit of such agreements as long as the Convention
  is applicable to them, except where express provisions to the contrary are contained in the
  aforesaid or in subsequent agreements, or where more favorable measures have been taken with
  regard to them by one or other of the Parties to the conflict.
  ARTICLE 7
  Prisoners of war may in no circumstances renounce in part or in entirety the rights secured to
  them by the present Convention, and by the special agreements referred to in the foregoing
  Article, if such there be.
  ARTICLE 8
  The present Convention shall be applied with the cooperation and under the scrutiny of the
  Protecting Powers whose duty it is to safeguard the interests of the Parties to the conflict. For
  this purpose, the Protecting Powers may appoint, apart from their diplomatic or consular staff,
  delegates from amongst their own nationals or the nationals of other neutral Powers. The said
  delegates shall be subject to the approval of the Power with which they are to carry out their
  duties.
  The Parties to the conflict shall facilitate to the greatest extent possible the task of the
  representatives or delegates of the Protecting Powers.
  The representatives or delegates of the Protecting Powers shall not in any case exceed their
  mission under the present Convention. They shall, in particular, take account of the imperative
  necessities of security of the State wherein they carry out their duties.
  ARTICLE 9
  The provisions of the present Convention constitute no obstacle to the humanitarian activities
  which the International Committee of the Red Cross or any other impartial humanitarian
  organization may, subject to the consent of the Parties to the conflict concerned, undertake for
  the protection of prisoners of war and for their relief.
  ARTICLE 10
  The High Contracting Parties may at any time agree to entrust to an organization which offers
  all guarantees of impartiality and efficacy the duties incumbent on the Protecting Powers by
  virtue of the present Convention.
  When prisoners of war do not benefit or cease to benefit, no matter for what reason, by the
  activities of a Protecting Power or of an organization provided for in the first paragraph above,
  the Detaining Power shall request a neutral State, or such an organization, to undertake the
  functions performed under the present Convention by a Protecting Power designated by the
  Parties to a conflict.
  If protection cannot be arranged accordingly, the Detaining Power shall request or shall accept,
  subject to the provisions of this Article, the offer of the services of a humanitarian organization,
  such as the International Committee of the Red Cross, to assume the humanitarian functions
  performed by Protecting Powers under the present Convention.