Complex sentence: Rex Reed of Observer "rated the film with four stars, and called it" the best war film since "Saving Private Ryan"... (I) t is violent, harrowing, heartbreaking and unforgettable.
Split into simpler sentences: Rex Reed of Observer "rated the film with four stars, and called it" the best war film since "Saving Private Ryan". "He added:" (I) t is violent, harrowing, heartbreaking and unforgettable.