This is a situation topic. It would depend on why, how, who I'm fighting against.
I don't feel bad for saying this, but I bet I will get backlash. I would not fight for my country, or kill someone else for it in most cases. I do however have much pride in our troops and always wish them well.
I would like to think I would kill for a family member or close friend.
Personally, I don't feel as if I have the disposition for murder, but of course everyone does in reality. Self defense and for the people I care about would be my answers.