Sweden
Practice Relating to Rule 65. Perfidy
Section G. Simulation of protected status by using the United Nations emblem or uniform
Sweden’s IHL Manual (1991) emphasizes that, pursuant to Article 37 of the 1977 Additional Protocol I, “the feigning of protected … status … of a member of the armed forces … of the United Nations” constitutes perfidious conduct.
Under Sweden’s Penal Code (1962), as amended in 1998, the misuse of the insignia of the UN or “the killing or injuring of an opponent by means of
some other form of treacherous behaviour” constitutes a crime against international law.

(emphasis added)