War movie fans know that "Saving Private Ryan" begins with World War II veteran James Ryan visiting the grave of Capt. John Miller in one of Europe's 13 American cemeteries. The rest of the movie is about how Miller ended up in the grave, but where it -- and most war movies -- stop the story is when the hero is killed in battle. No one ever seems to think about how their remains are actually interred and who takes care of the graves in the years to come. Everyone, that is, except author Robert