Related Rule
France
Practice Relating to Rule 123. Recording and Notification of Personal Details of Persons Deprived of Their Liberty
France’s LOAC Summary Note (1992) provides: “The identity of POWs [prisoners of war] shall be established as soon as possible.” 
France, Fiche de Synthèse sur les Règles Applicables dans les Conflits Armés, Note No. 432/DEF/EMA/OL.2/NP, Général de Corps d’Armée Voinot (pour l’Amiral Lanxade, Chef d’Etat-major des Armées), 1992, § 2.1.
France’s LOAC Teaching Note (2000) provides that the identity of every prisoner of war “shall be established as soon as possible and be mentioned on an identity card which shall be given to him at this occasion”. 
France, Fiche didactique relative au droit des conflits armés, Directive of the Ministry of Defence, 4 January 2000, annexed to the Directive No. 147 of the Ministry of Defence of 4 January 2000, p. 3.