ICRC databases on international humanitarian law
Treaties and Documents
1949 Conventions and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Annex I (to Protocol Additional I to the Geneva Conventions of 1949) : Regulations concerning identification, 6 June 1977
Use of international codes
-- Use of international codes
Medical units and transports may also use the codes and signals laid down by the International Telecommunication Union, the International Civil Aviation Organization and the Inter-Governmental Maritime Consultative Organization. These codes and signals shall be used in accordance with the standards, practices and procedures established by these Organizations.