The document includes Part 1 of the FBI Manual of Administrative Operations and Procedures (MAOP), which addresses activities and standards of conduct. The document includes information on ethics advice and training, personal conduct regulations, ...
Army Pamphlet: FM 27-10 THE LAW OF LAND WARFARE, December 1956 version.
The Fourth Geneva Convention sets forth conduct in time of war.
Geneva Convention Treatment of Prisoners of War August 12, 1949.
Geneva Convention Article V: Convention (V) Information Bureaux and Relief Societies for Prisoners of War