I liked this a lot, but would have a hard time recommending it to anyone who isn't interested in the history of sci-fi. Its influence on the genre is obvious, but this book has a lot of problems. I definitely understand why people accuse this book of endorsing fascism - whatever Heinlein's excuses are, this order of things is definitely presented as correct. The book also wears its masculinity on its sleeve - for good and for ill. Worth a read if only because so much military sci-fi in the years since are responding to this or influenced by it.