Organization Todt aged Armband
Organization Todt (OT) was a civil and military engineering organization in Nazi Germany from 1933 to 1945, named for its founder, Fritz Todt, an engineer and senior Nazi. The organization was responsible for a huge range of engineering projects both in Nazi Germany and in occupied territories from France to the Soviet Union during World War II. It became notorious for using forced labor. From 1943 until 1945 during the late phase of the Third Reich, OT administered all constructions of concentration camps to supply forced labor to industry.