Wilhelmstraßen-Prozess
In the Ministries Trial at Nuremberg, Pleiger was convicted and sentenced to 15 years in prison in 1949. He was released from prison in 1951. One of his lawyers was Robert Servatius, who had defended Fritz Sauckel in the Nuremberg trials of the main war criminals, Karl Brandt in the Doctors' trial and later also Adolf Eichmann.