Related Rule
Practice Relating to Rule 88. Non-Discrimination
Section E. Apartheid
Switzerland’s Basic Military Manual (1987) provides that “practices of apartheid or other inhumane and humiliating treatment based on racial discrimination, implying a serious violation of human dignity”, is a grave breach of the 1977 Additional Protocol I. 
Switzerland, Lois et coutumes de la guerre (Extrait et commentaire), Règlement 51.7/II f, Armée Suisse, 1987, Article 193(2)(c).