Complex sentence: This meant the Nazis'intention of staging a show trial had become a futile exercise and Hitler ordered the killing of special security prisoner' Eller',' Eller' being the name by which Elser was called in Dachau.
Split into simpler sentences: This meant the Nazis'intention of staging a show trial had become a futile exercise. Therefore Hitler ordered the killing of special security prisoner' Eller', that being the name by which Elser was called in Dachau.