Once and Future King
T. H. White
The Rise of the Terran Empire: Technic Civilization Saga
Poul Anderson
Technic Civilization Saga (3)
Hyde & Seek
Simon R. Green
Jekyll & Hyde (2)
The Tank Lords
David Drake
Hammer's Slammers (3)
Seven Blades in Black
Sam Sykes
The Grave of Empires (1)