Symphony of Light — Jack McKinney

THE DECISIVE BATTLE

It had been a long hard road for Scott Bernard and his ragtag band of Robotech irregulars; but the Invid stronghold known as Reflex Point was finally close at hand, and reparations were under way for a full-scale assault.

But the Invid Regis was not about to surrender so easily the world she had come halfway across the galaxy to claim - especially now that her experiments in racial transmutation were nearing their conclusion.

And no one, Human or Invid, thought to ask whether Protoculture might have something to say in these matters. But indeed it did; and the final encounter of the Robotech Wars would be more mystifying than anyone had imagined.
AND EARTH WAS THE PRIZE!