Dune. The Machine CrusadeDune. The Machine Crusade

As the struggle against the thinking robots continues, Serena Butler's forces continue their battle and Selim Wormrider and his Fremen outlaws take the first step into becoming the fighters who would change history.
More than two decades have passed since the events chronicled in The Butlerian Jihad. The crusade against thinking robots has ground on for years, but the forces led by Serena Butler and Irbis Ginjo have made only slight gains; the human worlds grow weary of war, of the bloody, inconclusive swing from victory to defeat. And on the faraway, nearly worthless planet of Arrakis, Selim Wormrider and his band of outlaws take the first steps to making themselves the feared fighters who will change the course of history: the Fremen.