Related Rule
New Zealand
Practice relating to Rule 66. Non-Hostile Contacts between the Parties to the Conflict
Section C. Definition of parlementaires
New Zealand’s Military Manual (1992) notes: “Negotiations between belligerent commanders are normally conducted, at least in the first instance, by intermediaries known as parlementaires … Parlementaires normally operate under a flag of truce.” 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 406(1) and (2).