quality:correction
Slave labor

SS General Hans Kammler, who as an engineer had constructed several concentration camps, including Auschwitz, had a reputation for brutality and had conceived the idea of using concentration camp prisoners as slave laborers in the rocket program. Arthur Rudolph, chief engineer of the V-2 rocket factory at Peenemünde, endorsed this idea in April 1943 when a labor shortage developed. More people died building the V-2 rockets than were killed by it as a weapon. Von Braun admitted visiting the plant at Mittelwerk on many occasions, and called conditions at the plant "repulsive", but stated that he had never personally witnessed any deaths or beatings, although it had become clear to him by 1944 that deaths had occurred. He denied ever having visited the Mittelbau-Dora concentration camp, where 20,000 died from illness, beatings, hangings, and intolerable working conditions.

Some prisoners state that von Braun engaged in brutal treatment or approved of it. Guy Morand, a French resistance fighter who was a prisoner in Dora, testified in 1995 that, after an apparent sabotage attempt, von Braun ordered a prisoner to be flogged, while Robert Cazabonne, another French prisoner, stated that von Braun stood by as prisoners were hanged by chains suspended by cranes. However, these accounts may have been a case of mistaken identity. Former Buchenwald inmate Adam Cabala stated that von Braun went to the concentration camp to pick slave laborers:

... also the German scientists led by Prof. Wernher von Braun were aware of everything daily. As they went along the corridors, they saw the exhaustion of the inmates, their arduous work and their pain. Not one single time did Prof. Wernher von Braun protest against this cruelty during his frequent stays at Dora. Even the aspect of corpses did not touch him: On a small area near the ambulance shed, inmates tortured to death by slave labor and the terror of the overseers were piling up daily. But, Prof. Wernher von Braun passed them so close that he was almost touching the corpses.

Von Braun later stated that he was aware of the treatment of prisoners, but felt helpless to change the situation. When asked if von Braun could have protested against the brutal treatment of the slave laborers, von Braun team member Konrad Dannenberg (a member of the Nazi party since 1932) told The Huntsville Times: "If he had done it, in my opinion, he would have been shot on the spot."