It's interesting to read this book, as it doesn't use any of the myth language we use now when speaking about WWII. That, and I'm still not certain that Billy Pilgrim actually experienced his time lapses (and alien abduction) or if the book was an exploration of insanity brought on by war. I lean towards the latter, but that's my reading; influenced a bit by the death scene of Billy Pilgrim, which is a funny bit of past-future that is will never be.
One of the most disturbing things was the relating of horrible acts followed by the very bland, "and so it goes".
I did like the way the time travel allowed us to look at all parts of Billy's life and see how badly he was affected by the bombing of Dresdin. It's an effective way to tell a war story.