ICRC databases on international humanitarian law
Treaties and Documents
1949 Conventions and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Draft Convention for the Protection of Civilian Populations Against New Engines of War. Amsterdam, 1938.
Art. 31. This Convention is in addition to, and not in substitution for, the humanitarian obligation imposed upon any Signatory State by any general treaty such as the Hague Conventions of 1899 and 1907 and the International Convention relating to the Treatment of Prisoners of War, 1929.