A soldier might kill someone in wartime, might even go overboard in the heat of the moment and kill more people than would be absolutely necessary, and feel fully free of sin because the Church says, and the soldier understands the Church as saying, that killing is okay in wartime. I would not be against siding with the soldier feeling merciful toward himself or herself and not having life destroyed by guilt and remorse.

Now, for me, I don't believe the Church's excusing killing in wartime. I think we are supposed to do other things. I would feel guilty from sin.