reflection of slaughterhouse V

in this book it told about a story of the narrator (he made a avatar of himself in the book. i'm really sure that the protagonist in the book is the narrater) who suffered the worst bombing in europe during the second world war.
in this book,the best part is the protagonist can time travel to somewhere in time which he had same emotion.
even though this book should be a serious novel there still have a lot of black humour in it: every time when somebody or something died, the narrator will say: so it goes. for him, death is a really common thing.
any way. the story give people a awful feeling about wars. some people even says the book helps stoping the Vietnam War.