Kevin J Anderson & Brian Herbert 
Machine Crusade [EPUB ebook] 
Legends of Dune 2

The first battle was a victory. But the war is just beginning . . .Earth is a radioactive ruin. But the initial campaign of the Butlerian Jihad has given new hope to mankind. Serena Butler, whose murdered child has become a symbol for oppressed humanity, inspires a war against the thinking computers led by Xavier Harkonnen and Vorian Atreides.But four of the Titans murderous machines with human brains and human cunning still remain. And the universal computer mind, Omnius, still wields most of its power. Such vile villains…and such a fascinating description of splendid places.‘ Anne Mc Caffrey on HOUSE HARKONNEN