Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unweird, believable science fiction.

Facing almost certain death at the hands of Cuban military forces in the civil war in Angola, Captain Rick Galloway and his small band of mercenaries are suddenly given the opportunity for life -- by the intervention of a alien spaceship. Rick and his band eventually end up on the planet Tran where they discover the reason for their rescue. When I read this book on its first publication in the 1970's, it was great. I recently obtained a new copy and find it's still a great science fiction story, well worth the $5 or $6 monetary outlay and two or three evening investment in time. If you like unweird, believable (within obvious parameters) science fiction you'll probably like Janissaries. P.S. I discovered Jerry Pournelle and Larry Niven as writers in their classic end of the world tale, Lucifer's Hammer. Forget about Armegedden and Deep Impact! Lucifer's Hammer was one of the first comet hits world stories and is still one of the best.