BBC - The Secret War - episode 5 "if"
 

Seltene Aufnahmen von Kurt (dt. Dambuster-Bombe) der Henschel Hs 293 und anderen Entwicklungen beider Seiten.

https://www.youtube.com/watch?v=ZGn38C-ibjc

his episode showcases certain inventions which either never became operational, or their deployment was significantly delayed, therefore leaving one only to imagine what could have happened 'if' certain developments had become into widespread use.

It features many inventions such as the Messerschmitt Me 321 and Messerschmitt Me 323, various contraptions intended to help the Invasion of Normandy including the Panjandrum and PLUTO, the Bachstelze autogyro, early helicopters, British and German bouncing bomb developments, the Henschel Hs 293, the Messerschmitt Me 163 and Jet aircraft developments such as the Gloster E.28/39, Messerschmitt Me 262 and Gloster Meteor.

Interviewees include Hanna Reitsch, Adolf Galland, Frank Whittle, Stanley Hooker, Constance Babington Smith, and Albert Speer.