Legacy trilogy (Ian Douglas)

In the future, earth's warriors have conquered the heavens. But on a distant world, Humanity is in chains ... Many millennia ago, the human race was enslaved by the An -- a fearsome alien people whose cruel empire once spanned the galaxies, until they were defeated and consigned to oblivion. But a research mission to the planet Ishtar has made a terrifying -- and fatal -- discovery: the Ahanu, ancestors of the former masters, live on, far from...

With the planet's fighting men and women deployed across the galaxy-battling in the noble cause of enslaved humanity-the insidious Xul have reached across space to devastate the unsuspecting Earth with asteroid fire. Without warning, a once majestic world is reduced to near-rubble-and the very future of humankind is in dire jeopardy. Interplanetary leaders are on the brink of abandoning Earth and its colonies to an overwhelming enemy. But Brigadier...