Parable

O'Brien makes out this book to be a bunch of parables, or short stories, in one. For the most part, every chapter is its own seperate story that somehow connects to the central character O' Brien. However, do these short stories have a moral? On page 74, O' Brien talks about the moral and goes on to say: "In a true war story, if ther's a moral at all, it's like the thread that makes the cloth. You can't tease it out. You can't extract the meaning without unraveling the deeper menaing. And in the end, really, ther's nothing much to say about a true war story , except maybe 'Oh.'." So is O' Brien saying that theres no way of finding out the moral of the story if there is one? This passage confused me becuase I'm not sure if he's saying whether or not a true war story has a moral. In the chapter "On a Rainy River", to me the moral of the story was that being a coward is doing what other people influence you to do and not want you want to do. But maybe O'Brien is saying there is a deeper meaning that that, I'm not sure.