The Dance of Time(Belisarius‪)‬

Battle Across Time! Belasarius Apotheosis!
Steamboats that launch Greek fire, telegraph lines connecting the battlefront on the Indus to ancient Constantinople, Byzantine palace plots aided by wireless devices: General Belasarius and his battlehardened troops must advance quickly through the history of technology to stave off a coming age of ultimate darkness. And now—the epic final battle that will either give birth to or destroy Aide, Belasarius's doughty crystalline advisor and humanity's loyal friend!