To be fair, on the grand scale of possible circumstances that might drive someone to murder, being a soldier is relatively common but not that high. The more in

To be fair, on the grand scale of possible circumstances that might drive someone to murder, being a soldier is relatively common but not that high. The more interesting cases involve intense personal hate, possibly for revenge for extreme injury, or reasons that blur the line with self-defense or defense of a loved one. But I think a lot of people would still require unfeasibly extreme circumstances, if they could do it at all.