Nick, I get real tired of the von Braun whitewash
Hitler intended the V2 to deliver tabun and sarin. There were only a few within the Peenemunde community who knew, but von Braun was one of them. It is true that he only learned of them when he was already at work on the V2, but what he did next is the interesting part.
Write me privately and I will send you four large text files setting it all out.