Great questions Maria!, but I think I can only handle one,lol. A "murderer" (as most of us picture) acts without remorse at the time of the killing, does not really take a second during the action, and think, "I care about what this person thinks", but instead, acts because they shouldnt think that far or they might not do what they feel could be saving other lives.
Murder implies that the person acting was acting without thinking everything through, whether or not the person they are killing is good or bad, or if they "deserved" it or not. But a soldier feels that they have that figured out, they know that who they are killing is bad, and by killing them they are saving "good" people.
To tell you the truth, I dont know where I was going to end up with this post, words are so hard to label things on, and define! Murder, not murder, not sure, but I know that whatever takes life must really know what its doing, lol! I mean, to love life, and have the iron heart to take it down at the same time, my heart could probably tear in two,lol.
One thing is sure, I hope that for every death, the killer can go up to the dead carcass and hold its head, say a prayer, and hope that it can hear them, saying, Sorry, i thought this was needed, and though we didnt have the time to learn each others languages, and talk about things, and hang out, i pray you can now hear me". I think that if everyone who took a life did that, then the ones who didnt would be considered "murderers", lol.