Crisis of Empire series by David Drake

In the distant future, corporations have become sustainable communities with their own militaries, and corporate goals have essentially replaced political ideology. On a youthful, rebellious impulse, Lawrence joined the military of a corporation that he now recognizes to be ruthless Read more

They were Roman soldiers— and they were still alive because there were no better killers in the galaxy. The Galactics need fighters who could win battles without the aid of technology. That's why, when Rome's legions suffered disaster at Carrhae, Read more