Related Rule
Sweden
Practice Relating to Rule 65. Perfidy
Section H. Simulation of protected status by using other internationally recognized emblems
Under Sweden’s Penal Code (1962), as amended in 1998, the misuse of the sign for civil defence and other internationally recognized emblems or “the killing or injuring of an opponent by means of some other form of treacherous behaviour” constitutes a crime against international law. 
Sweden, Penal Code, 1962, as amended in 1998, Chapter 22, § 6(2).
(emphasis added)
Sweden’s IHL Manual (1991) states: “Abuse of international emergency signals with perfidious intent may also be viewed as an example of perfidy.” 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.1.b, p. 29.