I Googled Rainer Karlsch.
A- There's no suggestion by the author that the weapons used were nuclear weapons but were actually radiological (meaning dirty bombs - something anyone with radiological material and some explosives can make).
B- There's no evidence to support the testing of radiological weapons on Rügen.
C- The author himself has admitted that he couldn't prove the claims he makes in his book (and one physicist criticized his book for displaying, "a catastrophic lack of understanding of physics".
Link.
This is on top of the facts that Germany stopped development on nuclear weapons by the end of 1943 and Japanese didn't start until Spring 1945 - and got about as far as you'd expect it to in a country under siege, starved for resources, and totally reliant on imports just to maintain production of basic war matériel like rifles.
Friedrich Georg gets nothing but Ernst Jünger's brother, who wrote poetry; a Prussian prince who was born in 1976; a 19th Century Russian astronomer, and; an Austrian actor born in 1966.
Edgar Meyer is an American bassist born in 1960, with his own website: edgarmeyer.com.
Luigi Romersa beings us to
this, which brings us back to Karlsch and his... rather shaky book.
TL;DR: Your post has a nugget of (possible) truth at it's core, but it is - the further you get from, "the Nazis
may have tested dirty bombs," - based more on fantasy than reality.
Bookmarks