I have not read the book, so I saw this film with no expectations what so ever. Honestly, the only reason I did see it, was sheer curiosity with Robert Pattinson. I'd only ever seen him in Harry Potter and the atrocious attempt at a movie adaption of my most beloved book Twilight, and apart from a beautiful face I thought he showed talent.
I think he does very much so in this film too. As I found most of the storyline quite confusing, his acting was the only thing that kept me watching; I understand that the story in general is about a RAF pilot who gets injured during a bomb raid, and later is tormented by the memories of war, but then it gets a bit... thin. My guess is that the director had an at least semi-clear vision of what he wanted this film to be, but no solid idea of how to get there.