Blankenburg, Brack’s deputy, replied to Himmler’s letter and stated that Brack had been transferred to an SS division, but that he, Blankenburg, as Brack’s permanent deputy would “immediately take the necessary measures and get in touch with the chiefs of the main offices of the concentration camps.” A Polish Jew testified before the Tribunal that while confined in Auschwitz concentration camp he was marched to Birkenau and forcibly subjected to severe X-ray exposure and was castrated later in order that the effects of the X-ray could be studied. A French physician of Jewish descent who was confined at Auschwitz from September 1943 to January 1945, testified that near Auschwitz was Birkenau camp where people were sterilized by SS doctors. About 100 male Poles who had been sterilized at Birkenau were attended by the witness after the operation. Later this group was castrated by the camp physicians. The record contains other evidence from which it is manifestly plain that sterilization by means of X-rays was attempted on groups of persons who were painfully injured thereby; and that castration followed the X-ray procedures. Brack’s part in the organization of the sterilization program with full knowledge that it would be put into execution, is conclusively shown by the record. EUTHANASIA PROGRAM The Euthanasia Program, which was put into effect by a secret decree of Hitler on the day that Germany invaded Poland, has been discussed at length in the judgment in the case against Karl Brandt. Brack contends that he was basically opposed to this program and that, on occasion, he assisted certain of his Jewish friends to escape from its consequences. But be that as it may, the evidence is that whatever sentiments Brack may have entertained toward individual members of the race, he was perfectly willing to and did act as an important administrator in furthering the Euthanasia Program. After it had gotten under way, he wrote letters to various public officials, explaining to them how to keep the matter secret and to allay the public sentiment against the program. This much is shown by Brack’s own statements. As a witness on the stand he testified that while at first he did not understand the full import of the program, he decided, after a talk with Bouhler, to collaborate in carrying out the assignment and to execute Bouhler’s orders. He participated in the initial meetings called for the purpose of placing the project in operation. He was present at meetings of the experts, as well as the administrative discussions. He often acted as Bouhler’s representative, frequently making decisions which called for the exercise of personal judgment and a wide latitude of discretion. Brack admitted that such were his activities in the program, that one might well have come to the conclusion that he was the influential man in euthanasia.