In the Heart of Darkness (Belisarius)

Belisarius is all that stands between the alien Malwa and the domination of sixth-century Earth. The ruthless supermind that controls the Malwa intends first to rule the world and then to put its stamp upon all eternity. Guided by visions from a future that may never be, Belisarius and his companions must fight their way across Northern India, seeking the heart of the enemy's power. Against them are numbers, savagery and an icy inhuman intelligence that is without weakness or mercy. And Belisarius has another enemy to contend with, closer to home: in Constantinople, his own emperor, Justinian the Great, begins to see him as a threat...