Kevmusic, John Blake was involved with the film as an advisor on historical facts.
He certainly advised on the ground eqipment from the German side,and i remember him telling us at the Tiger Club how he fell out with someone on the film about the type of tanks being used.
He would have also had an opinion on the "aviaition" side as he was a keen enthusiast,an aerobatic judge,and contact at the Royal Aero Club,not to mention his "Farnborough" and " Biggin Hill" commentries.
He was also famous for his "napkin" drawings of the days events at the end of Tiger Club Airshows.
PC