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
Manual of the Laws of Naval War. Oxford, 9 August 1913.
Section VII : On conventions between belligerents - Art. 80.
Art. 90. All agreements between belligerents must take into account the rules of military honour, and, once settled, must be scrupulously observed by the two parties.