ICRC databases on international humanitarian law
Treaties, States Parties and Commentaries
Treaties and Documents
Geneva Conventions of 1949 and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Instructions for the Government of Armies of the United States in the Field (Lieber Code). 24 April 1863.
Section III : Deserters -- Prisoners of war -- Hostages -- Booty on the battle-field. - Art. 80.
Art. 80. Honorable men, when captured, will abstain from giving to the enemy information concerning their own army, and the modern law of war permits no longer the use of any violence against prisoners in order to extort the desired information or to punish them for having given false information.