German civil engineer and SS commander during the Nazi era. He oversaw SS construction projects and towards the end of World War II was put in charge of the V-2 missile and jet programmes.
Kammler joined the Nazi Party (NSDAP) in 1931 and held a variety of administrative positions after the Nazi government came to power in 1933, initially as head of the Aviation Ministry’s building department. He joined the SS (no. 113,619) on 20 May 1933. In 1934, he was a councillor for the Reich’s Interior Ministry.
In June 1941, Kammler joined the Waffen-SS. Kammler eventually became Oswald Pohl’s deputy at the SS Main Economic and Administrative Office (WVHA). He oversaw Office D (administration of the concentration camp system), and was also Chief of Office C, which designed and constructed all the concentration and extermination camps. In this latter capacity he oversaw the installation of more efficient cremation facilities at Auschwitz-Birkenau as part of the camp’s conversion to an extermination camp.
Kammler was also charged with constructing facilities for various secret weapons projects, including manufacturing plants and test stands for the Messerschmitt Me 262 and V-2. Following the Allied bombing raids on Peenemünde in Operation Hydra, in August 1943, Kammler assumed responsibility for the construction of mass-production facilities for the V-2. He started moving these production facilities underground, which resulted in the Mittelwerk facility and its attendant concentration camp complex, Mittelbau-Dora, which housed slave labour for constructing the factory and working on the production lines.
Albert Speer made Kammler his representative for “special construction tasks”, expecting that Kammler would commit himself to working in harmony with the ministry’s main construction committee. But in March 1944 Kammler had Göring appoint him as his delegate for “special buildings” under the fighter aircraft programme, which made him one of the war economy’s most important managers, and robbed Speer of much of his influence.
In 1944, Himmler convinced Adolf Hitler to put the V-2 project directly under SS control, and on 8 August Kammler replaced Walter Dornberger as its director. From 31 January 1945, Kammler was head of all missile projects.
In March 1945, partially under the advice of Goebbels, Hitler gradually stripped Goering of several powers on aircraft support as well as maintenance and supply while transferring them to Kammler. This culminated, in the beginning of April, by Kammler being raised to “Fuehrer’s general plenipotentiary for jet aircraft”.
He died on 9 May 1945, aged 43, near Prague.

Link to Wikipedia biography