In Nazi Germany, the Nuremberg Race Laws of 1935 forbade sexual relations and marriage between an "Aryan" and a "non-Aryan" in order to maintain the purity of the Aryan race. Such relations became a punishable crime which was known as "Rassenschande" or "racial shame". The League of German Girls was particularly required to instruct girls to avoid "Rassenschande" because according to Nazism, maintaining racial purity was particularly important for young females. Aryans found guilty of this crime could face incarceration in a concentration camp, while non-Aryans could even face the death penalty. The Nazis recognized the Germanic people as the master race, and several policies were implemented in order to improve and maintain the Germanic-Nordic ubermenschen Aryan "master race," including the practice of eugenics. In order to eliminate "defective" citizens and rid the country of the intellectually disabled or those who were born with genetic deficiencies, as well as those who were deemed racially inferior, the T-4 Euthanasia Program was administered by Karl Brandt, one of Hitler's personal physicians. Additionally, a program of compulsory sterilisation was also implemented and as a result of it, forced operations were performed on hundreds of thousands of individuals. Many of these policies are generally seen as being related to what eventually became known as the Holocaust.