Thank you Pierce.
Regarding the link between Bürkner and the Slovaks. The first link is that we know for sure he was awarded the Slovak Victory Cross. The second link could be through his post as Chief of the Foreign Department, later Foreign-Office-Group in the Foreign-Office, OKW (15 Jun 1938-30 Jun 1944), which would undoubtedly link him with all Axis Allies of the Third Reich in some way.