 His death caught the attention of SS-Obergruppenführer Josias, Prince of Waldeck and Pyrmont, who had been treated by Kraemer in the past, leading to the eventual investigation and execution of Koch for various unrelated crimes.Kraemer's activity in the camp infirmary led, in 1945 to the nickname "doctor of Buchenwald".The journalist and political scientist Eugen Kogon (CDU) praised his Buchenwald inmate in 1946's ""The SS State"" as a "strong, bold personality."