Furmyr says:
I'm thinking Code of Honor would be don't kill prisoners, treat surrendered soldiers properly and no underhanded tactic with illegal weapons. He has decided that he has to be better than those we are fighting, or we'll just turn into them.
Old Injury, I was thinking he took a piece of shrapnel in his knees from an IED and thought his days as an adventurer was over.
Having been injured though, he is used to it, so I'll switch out Reputation with Vigor 3.
So, for the Code, your character will accept a surrender and not abuse the prisoner (or allow them to be abused), right? Will your character trust the prisoner to keep their word?
I'm not sure what you're getting at with your other point: "no underhanded tactic with illegal weapons". What does this mean?
As for the Old Injury, does this mean any use of his legs for anything other than walking causes the damage? Standing for a long time, like hours eg on guard, might also count, too.