Steven Spielberg's WAR HORSE New Poster Evokes The Golden-Age Of Hollywood Era! ,Sunset plays a big part in the new poster of Steven Spielberg's upcoming World War I epic drama WAR HORSE, which scheduled to hit U.S. theaters on December 28, 2011. Check it out below.Sunset plays a big part in the new poster of Steven Spielberg's upcoming World War I epic drama WAR HORSE, which scheduled to hit U.S. theaters on December 28, 2011. Check it out below.