Dishonorable discharge stands for lance corporal sentenced for bludgeoning, nearly killing...

I also kinda think he's got pretty much zero chance of appealing it, as well...

No. I’m surprised confinement was reduced to 15 months, though.

Correct discharge.
Corporal’s jaw broken into six pieces; lost two teeth; scarring and nerve damage; placed in medically induced coma for several days; and, nearly died from his injuries.
Factors:
*level of violence
*use of weapon likely to kill or inflict grievous bodily harm.
*caused grievous bodily harm.
*victim was of an NCO.
It is meant to be punitive.
A BCD would have had the same effect with regard to benefits, but the DD was part of the punishment, and proper.