Règle correspondante
Sweden
Practice Relating to Rule 6. Civilians’ Loss of Protection from Attack
Sweden’s IHL Manual (1991) states: “Protection for civilians does not apply under all circumstances – exceptions are made for the time when civilians take direct part in hostilities, which is equivalent to their taking part in armed fighting.” 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.5, p. 43.
Sweden’s IHL Manual (1991) states:
The presence of individual combatants, for example among gatherings of people, has sometimes entailed a belligerent considering himself entitled to launch an attack on the gathering, with particularly serious consequences. It is therefore laid down in Article 50 [of the 1977 Additional Protocol I] that the presence of individual combatants within the civilian population may not deprive this population of its civilian character and thus its protection. 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.5, pp. 42–43.
Sweden’s IHL Manual (1991) states: “Where there is doubt whether a person is to be considered as a combatant or as a civilian, the person shall be considered as a civilian.” 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.5, p. 42.