Related Rule
Russian Federation
Practice Relating to Rule 123. Recording and Notification of Personal Details of Persons Deprived of Their Liberty
The Russian Federation’s Regulations on the Application of IHL (2001) states:
Initial registration means a list containing the family names, first names, patronimics, the dates of birth and personal or serial numbers, or failing this, equivalent information concerning prisoners of war. The person in charge of registration shall explain to the prisoners of war their status, rights, duties and rules of behaviour in a language that they understand. 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 158.