The Swordsman of Mars In "Swordsman of Mars," Harry Thorne, outcast scion of a wealthy East Coast family, seeks the greatest adventure of his life. He exchanges bodies with his look-alike, Martian Sheb Takkor, and is transported millions of years Read more
Another serie that's all over the place on amazon you can get the omnibus of the full trilogy on kindle here ( shown with an absolutely hideous cover! ) or the 3 audiobooks here, here and here

Sent on an exploratory mission to the dead worlds of the Old Empire, Commander Jared Mertz sets off into the unknown.
Only the Old Empire isn’t quite dead after all. Evil lurks in the dark.
With everything he holds dear at stake, Jared must fight like never before. Victory means life. Defeat means death. Or worse.
If you love military science fiction and grand adventure on a galaxy-spanning scale, grab “Empire of Bones” and the rest of The Empire of Bones Saga today!
