Was watching Rosewater, and was intrigued by the process of interrogation, which lead me to search for "Best interrogation books" online, there were a wealth of them, but this one especially peaked my interest because of the near universal positive review and counter-intuitive positive reviews of Luftwaffe interrogator Hans Scharff's life as well as his methodology (he was a Nazi right?!). Scharff a South African ex-pat from Germany at the outset of the war, an industrialist with an English wife; he was very successful in just being observant, polite and having a wealth of background data on the Allied POWs. He was personally a fulcrum for so many aspects of the war geographically, culturally, and strategically.
I was surprised at just about every turn, many of my presuppositions about interrogation were really based on movies and progressive non-fiction which highlighted aggressive torture techniques; this was not the case for Scharff and his Luftwaffe interrogators. The craft and professionalism of successful interrogation where, as in Germany during WWII, was such an organized infrastructure of information and intelligence gathering that Scharff and the Luftwaffe did not need to strong arm POWs, they could simply piece together oblique data with already culled data from other intelligence sources to get a full picture. In this way, force is not necessary, when POWs believe the interrogators already new everything, they felt they had little to hide, and shared willfully of "inconsequential" details that, in the aggregate, went to this great pool of knowledge that duped the next POW. I imagine this is very much an analog version of what we are presently seeing in the post-Snowden NSA era, where US intelligence just draws down ALL the traffic/data and then has computers and analysts sift the metadata and patterns to come to conclusions.
Since it's very hard to reconcile the respectful nature of aviator officer class fighting gentleman, with what I have read of the Nazis, it was good that the memoir also discussed that the Luftwaffe methodologies were exceptional and that the SS and the Japanese equivalent were strong-arming torturers and much more the status quo; disturbing and ineffective as these methods were.
The book highlights yet another aspect of the WWII era that complicated my understanding and deepened it as well, this does not forgive the Axis, but it does humanize an individual working in the era, and really showcase the micro-aspects of personality, warrior/honor, and general humanity in a very conflicted period of history.
I believe I will try a more recent interrogation book to see if Scharff's respected process remains in modern intelligence practice...or is it all the gitmos, abu gharibs and waterboarding, I read about post-9/11?
Is there still any individual human influence involved in solving for missing data?