On your previous points, I would just confirm that I have never heard a hint of a Canadian who has been involved in any of these things. My sense of the Canadian Forces is that they're extremely professional, very well trained, and maybe one of the best militaries in the world. I would share your high view of them.
With respect to insurgent prisoners, I have to say that I've never seen a prisoner in a cell. The ones we were monitoring were brought to a separate location, and we were given a tour of the prison facility separately. In terms of going inside a cell when prisoners were in the cell, I didn't see that.