Practice Relating to Rule 99. Deprivation of Liberty
Section C. Prompt information on the reasons for deprivation of liberty
Switzerland’s Basic Military Manual (1987) provides: “Every person arrested, detained or interned for acts committed in connection with the conflict shall be informed, without delay, in a language he or she understands, of the reasons why the measures have been taken.”
In 2010, in its Report on IHL and Current Armed Conflicts, Switzerland’s Federal Council stated that:
3.4 [Increasing use] of anti-guerrilla tactics
Apart from the direct fight against insurgents, international humanitarian law also addresses other anti-guerrilla tactics. … If members of militias or opposition groups fall into the hands of the government they benefit from the protection of art. 75 of [the 1977] Additional Protocol I as well as that of art. 3 common to the  Geneva Conventions.
[footnotes in original omitted]