For your consideration, a telling of the birth and life of the Waffen SS.
https://odysee.com/@TheBlackSunSociety: ... affen-Ss:9
The Waffen SS- An interview with Leon Degrelle
The Waffen SS- An interview with Leon Degrelle
were to guess why no t4 personnel were chosen to perform gassing that had experience with gassing, it would be because THERE WERE NONE.