Hans Kammler, German SS officer and engineer (d. 1945)
Hans Kammler (26 August 1901 – 1945 [assumed]) was an SS-Obergruppenführer responsible for Nazi civil engineering projects and its top secret weapons programmes. He oversaw the construction of various Nazi concentration camps before being put in charge of the V-2 rocket and jet programmes towards the end of World War II. Kammler disappeared in May 1945, during the final days of the war. There has been much conjecture regarding his fate.