You can say what you like about the conclusions Titeux came to but there is no reason whatsoever to dispute the documentation he provided.
Cambaceres makes it completely clear that what he is suggesting is a way of getting round the awkward fact that there is no way of trying Dupont and the others on a treason charge and that it is not a regular form of court-martial or any other court. This is demonstrated by the fact that he states it will not be able to impose an afflictive penalty, which a court-martial obviously could.
Susan