One thing filmmaker Christopher Nolan knows how to do best is create great introductory/teaser trailers that are all reason enough to see his films. As what else do you need to know besides that he is a great filmmaker and that the film he is making is about war, survival and death. It really shouldn't be that hard of a sell.
director: Christopher Nolan
starring: Tom Hardy, Cillian Murphy, Mark Rylance and Kenneth Branagh
release dates: 21 July 2017 (USA), 27 July 2017 (Germany)