John Ringo’s series - definitely and I would have liked to see the John Carter series by Edgar Rice Burroughs as well. Not sure if everyone would agree but it was one of my early favorites.
I heard that a movie is coming out soon.
Mark
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I love John Ringo and only recently discovered that there were more than five books in Mars/John Carter series. I stumbled upon them when I was searching for free e-books. Haven't read them yet, but now I have to re-read the first five to catch up. Oh, the humanity !! Somebody force me to read a good book, please !!!