Sure.
As long as imprisonment is a possibility—and I don't go to other serious concerns as well—you must provide more fairness, so you get rid of that possible punishment or you provide the same standards that you and I are subject to in ordinary Canadian trials.
Again, if you're in the middle of a war theatre, exceptions can be made; you could draft legislation that would do that. Generally speaking, you can't impose, for example, a denial of liberty without more procedural fairness than you have in this stuff, because you will have people wrongfully convicted left, right, and centre. Second, even if I'm wrong in that, you can't saddle somebody who doesn't have that kind of protection with a lifelong criminal record.