When these lads complete their sentence at MCTC Colchester, if they are to be discharged, then they will almost certainly be given some resettlement advice, (though possibly not a course of training?), the staff will be well versed in what jobs may not be available that require a security clearance.
I wondered if the corporal might get charged with mutiny as he seems to be a ring-leader who incited this minor uprising. When the 1st (Para) Bn. of the French Foreign Legion rebelled in Algiers, (in the sixties?), the French eventually shot the Sgt ringleader for inciting mutiny.