Related Rule
Netherlands
Practice Relating to Rule 88. Non-Discrimination
Section E. Apartheid
The Military Manual (1993) of the Netherlands provides: “Practices of apartheid and other inhuman and degrading practices involving outrages upon personal dignity, based on racial discrimination, are a grave breach of the Geneva Conventions and their Additional Protocols”. 
Netherlands, Toepassing Humanitair Oorlogsrecht, Voorschift No. 27-412/1, Koninklijke Landmacht, Ministerie van Defensie, 1993, p. IX-6.
Under the International Crimes Act (2003) of the Netherlands, it is a crime to commit, in an international armed conflict, “the following acts if committed intentionally and in violation of the Geneva Conventions and Additional Protocol (I): … practices of apartheid and other inhuman and degrading practices involving outrages upon personal dignity, based on racial discrimination”. 
Netherlands, International Crimes Act, 2003, Article 5(2)(d)(iii); see also Article 4(1)(j) (apartheid as a crime against humanity).