If You Love Battlefield Earth You Might Also Enjoy Discovering:
Books: DuneFoundationHyperionRendezvous with RamaStranger in a Strange Land by Robert A. HeinleinThe Demolished Man by Alfred BesterNeuromancer by William GibsonSnow Crash by Neal StephensonThe Forever War by Joe HaldemanA Canticle for Leibowitz by Walter M. Miller Jr.