In reading order
The Fringe Worlds
T.R. Harris
Alien Assassin
T.R. Harris
The War of Pawns
T.R. Harris
The Tactics of Revenge
T.R. Harris
The Legend of Earth
T.R. Harris
Cain's Crusaders
T.R. Harris
The Apex Predator
T.R. Harris
A Galaxy to Conquer
T.R. Harris
The Masters of War
T.R. Harris
Prelude to War
T.R. Harris
The Unreachable Stars
T.R. Harris
When Earth Reigned Supreme
T.R. Harris
A Clash of Aliens
T.R. Harris
Battlelines
T.R. Harris
The Copernicus Deception
T.R. Harris
Scorched Earth
T.R. Harris
Alien Games
T.R. Harris
The Cain Legacy
T.R. Harris
The Andromeda Mission
T.R. Harris
Last Species Standing
T.R. Harris
Invasion Force
T.R. Harris
Force of Gravity
T.R. Harris
Mission Critical
T.R. Harris
The Lost Universe
T.R. Harris
The Immortal War
T.R. Harris
Destroyer of Worlds
T.R. Harris
Phantoms
T.R. Harris
Terminus Rising
T.R. Harris
The Last Aris
T.R. Harris