Huff, Tanya -- Valor's Trial [e-book purchase]
This would be the one where the badass sergeant is thrown into a
prison camp and has to break out. It's an alien prison camp, mind you.
This adds some bits to the backstory, but also (spoilers for the blurb
of the sequel) Sgt. Kerr musters out at the end, so how can the next
book be any fun at all?
Books I have acquired recently
All the books I own