Spielberg To Ride The "War Horse" Steven Spielberg has selected his next directing job: World War I epic " War Horse ." Disney and DreamWorks will release the film Aug. 10, 2011. "War Horse" is based on Michael Morpurgo's novel of the same name, as well as a stage adaptation. Spielberg is producing with Kathleen Kennedy, Frank Marshall and Revel Guest. Scribes Lee Hall and Richard Curtis are penning the adapted script. Set against the sweeping backdrop of the Great War, storyline charts the extraordinary friendship between a boy and a horse who are separated but whose fates continue to intertwine over the course of WWI. The Great War was a natural topic for Spielberg to take on. He's already explored World War II in a number of projects, including directing "Saving Private Ryan." He exec produced HBO's "Band of Brothers," and more recently, the pay cabler's "The Pacific." Spielberg and DreamWorks co-