You go awol, bleding in with the other soldiers but spending your time watching the man you maimed you. Finally, just the right moment arises, and you get him alone. You lead with a pistol whip, then shoot each of his legs while he's down. You're a good shoot, considering you're using your off hand.
"Did you take care of my hand?" you ask.
"You," he questions, "Yes! You! The idiot thief! You got what was coming to you!" He spits at your feet.
"So did you," you say as you blow out his brains. You're apprechended and executed in pretty short order after than, but survival was never your goal; only vengeance.