Answer:T4 Program, also called T4 Euthanasia Program, Nazi German effort—framed as a euthanasia program—to kill incurably ill, physically or mentally disabled, emotionally distraught, and elderly people. Adolf Hitler initiated the program in 1939, and, while it was officially discontinued in 1941, killings continued covertly until the military defeat of Nazi Germany in 1945.
In October 1939 Hitler empowered his personal physician and the chief of the Chancellery of the Führer to kill people considered unsuited to live. He backdated his order to September 1, 1939, the day World War II began, to give it the appearance of a wartime measure. In this directive, Dr. Karl Brandt and Chancellery chief Philipp Bouhler were “charged with responsibility for expanding the authority of physicians…so that patients considered incurable, according to the best available human judgment of their state of health, can be granted a mercy killing.”
Within a few months the T4 Program—named for the Chancellery offices that directed it from the Berlin address Tiergartenstrasse 4—involved virtually the entire German psychiatric community. A new bureaucracy, headed by physicians, was established with a mandate to kill anyone deemed to have a “life unworthy of living.” Some physicians active in the study of eugenics, who saw Nazism as “applied biology,” enthusiastically endorsed this program. However, the criteria for inclusion in this program were not exclusively genetic, nor were they necessarily based on infirmity. An important criterion was economic. Nazi officials assigned people to this program largely based on their economic productivity. The Nazis referred to the program’s victims as “burdensome lives” and “useless eaters.”
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