Proportionality and/or informal discipline as a better method than a court-martial?
In fact I dont think that a court martial will happen. Unless things have changed a lot since I was in, this offence can be dealt with by the soldier's commanding officer, and I think I am right in saying that he can be awarded up to 28 days detention (not imprisonment, although in effect that's what it is). Of course the soldier can elect to be tried by court martial, but as he is "bang to rights" I doubt if that would be a sensible choice!
Sorry
Clockwork Mouse, you beat me to it!