Armada of Antares. Dray Prescot, #11

Kregen! That marvelous world circling the double-star Antares in the constellation Scorpio has been the scene of many an exciting event as its myriad human and non-human races struggle with each other for ascendency. But for Dray Prescot, Earthman and Prince of Vallia, all of the electrifying aspects of his adventurous life on Kregen were to climax when the armies of Havilfar made their move toward his adopted homeland.
But he has yet to fully solve the secret of their mysterious air fleets. Armada of Antares is the culmination of all his experiences on Kregen so far. A peril-pitched novel, complete in itself, of an alien world stirred up to a life-or-death frenzy. This edition contains a glossary to the Havilfar cycle. Armada of Antares is the eleventh book in the epic fifty-two book saga of Dray Prescot of Earth and of Kregen by Kenneth Bulmer, writing as Alan Burt Akers.
It follows Avenger of Antares. The series continues in The Tides of Kregen.