Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. SS-Obersturmführer (First Lieutenant) Irmfried Eberl (September 8, 1910 - February 16, 1948) was an Austrian Nazi war criminal who helped to establish, and was the first commandant of, the Treblinka extermination camp, where he worked from 01942-07-11 July 11, 1942 until his dismissal on 01942-08-26 August 26, 1942. As a psychiatrist, Eberl was the only physician to command an extermination camp. In January 1948, he was arrested. Before his trial could begin, he hanged himself.