BRACK was a SS officer and was with Hitlers chancellery in Belin. At the age of 35 yeras he was a senior colonel. He was handling E uthansia action programme T. 4 in which disabled 15000 Germans and Austrians were killed so that they do not reproduce there by making The German race better. For final solution H e took part in gassing Jews in exterminating camps and he also was on the job of castrating able bodied Jews without their knowledge by using x rays so that they could be used for labor in war effort. He was arrested After fall of Germany and was tried by Us military tribunal and was sentensed to death for war crimes and was hanged in 1948 at Lansberg prison In Bavaria .