This option was rejected by the American side having regard to the immense work of translation that should have been done. The lead investigator in the U.S. Army forced then the beginning of the process. By the end of December 1946 the preparation for the process was completed. Most of the indicted had been members of the camp staff, but also SS and Police Leader Josias, Hereditary Prince of Waldeck and Pyrmont was indicted, because Buchenwald concentration camp was in his jurisdiction. The camp commander, Hermann Pister, and members of the command staff, as well as the widow of the first commander, Ilse Koch, were indicted. Also, three of the camp doctors and senior SS medical officers had to stand trial. Finally, even block leaders, detachment commanders, three prisoner functionaries and a civilian employee stood trial. The legal basis of the process was the "Legal and Penal Administration" from March 1947, based on the decrees of the Military Government. The Control Council Law No. 10 of 20 December 1945, according to which any person who have been indicted for war crimes, crimes against peace and crimes against humanity could be convicted, played no significant role in this process. The defendants in U.S. military photos from April 1947