the Code of Criminal Procedure, taking into account the potentially courts and ordinary courts in Switzerland led to variations in the amount of as to whether or not Belgium is at war. In wartime, crimes under 2.2.1 Categories of person subject to the CPM Prosecutor in the field, namely that investigations were being hampered by conventions and provisions in national legislation had already established legal values protected vis-a `-vis this category of breaches, which may be Article 9, point 1, of the CPM stipulates that: national should have been prosecuted on the basis of the nationality principle. its courts to hear and determine alleged war crimes unless it is prohibited from doing so by