[edNorth]

Nothing to do with "need to know"?

Far from it, in my view. If Japanese Forces were to build and operate fleet of Jet fighters and/or Bombers, any Historical info - namely experiance gained - last six months by March 45 - whould be of much importance in taking such decision as to build them "full scale" (as the Germans did) but I think the Japanese did not make such decision. But I am only amateur in these matters, and only been reader of WW2 history for last 40 years (or a little longer, one tends to forget exact details or perspective changes with more info, whatever...)

My two cents be that these are possibly "findings" (notes) of Japanese Military Attache (or similar) delegation obtained within Germany, but quite possibly intercepted in code or in manuscript enroute - but the Japanese at the same time were getting blueprints and actual aircraft transported by submarine.

Probably the "Recce staffel" beeing the "Stab." rather than referance to a NAGr (The "Stab" had recce ~ "leading the flock" function back in Cavalry days).

Regards
Ed