Five stars for special effects and technical wizardry. Three stars for direction, although Mendes can do far better than this. Three stars for acting, not bad not great. Two stars for script, a standard war film churn-out. No stars for plot. There isn't one. It's essentially a documentary with an uninspired narrative. If you want WW1 with a story line read Robert Graves' "Goodbye to all that" or Erich Maria Remarque's "All quiet on the Western Front". AJP Taylor's "The First World War: an illustrated history" is far better-written, more entertaining, less predictable, than this film.