 The script was written primarily by Louis Golding but honed by Hurst's protege Terence Young (then subsequently went on to direct "They Were Not Divided" and the early Bond films).Young had been in the Irish Guards with the Guards Armoured Division with XXX Corps seeking to relieve Arnhem during the battle and hence the authenticity of the eventual story-line.The veterans who starred in the film also actively collaborated on the script.