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.
Bombardment of defended towns - Art. 3.
Art. 3. The bombardment by whatever means of towns, ports, villages or buildings which are defended is prohibited at any time (whether at night or day) when objects of military character cannot be clearly recognized.