Règle correspondante
Practice relating to Rule 66. Non-Hostile Contacts between the Parties to the Conflict
Section C. Definition of parlementaires
Ukraine’s IHL Manual (2004) states: “‘Parlementaires’ means persons designated by the military command to negotiate with the enemy command.” 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.2.37.