The Hamburg Ravensbrück trials were a series of seven trials for war crimes against camp officials from the Ravensbrück concentration camp that the British authorities held in their occupation zone in Germany in Hamburg after the end of World War II. These trials were heard before a military tribunal; the three to five judges at these trials were British officers, assisted by a lawyer. The defendants included concentration camp personnel of all levels: SS officers, camp doctors, male guards, female guards (Aufseherinnen), and a few former prisoner-functionaries who had tortured or mistreated other inmates. In total, 38 defendants were tried in these seven trials; 21 of the defendants were women. One of the defendants died during the trial. Twenty of the defendants received death sentences. One defendant was reprieved while two others committed suicide before they could be executed. The remaining 17 death sentences relating to these trials were carried out on the gallows at Hamelin Prison by British hangman Albert Pierrepoint. All seven trials took place at the Curiohaus in the Hamburg quarter of Rotherbaum. First trial The first Ravensbrück trial was held from December 5, 1946 until February 3, 1947, against sixteen Ravensbrück concentration camp staff and officials. All of them were found guilty. One died during trial. The death sentences (except for Salvequart) were carried out on May 2—3, 1947. Percival Treite, a half-British medical doctor at Ravensbrück, was defended by a dozen former female prisoners, including Special Operations Executive agent, Yvonne Baseden, who wrote letters to the court favorable to him. Ex-prisoner Mary Lindell testified in favor of Treite at the trial saying that Treite "was the only man who was human, the only man who looked after the sick people as a doctor should look after them." The outspoken Lindell also criticized the judge advocate, "who was partial and objectionable, had taken on the cross examination of witnesses himself and prevented other questions from being put which might have been [answered] in favour of the accused." Nevertheless, Triete was sentenced to death. Three more defendants, the camp leader, Lagerkommandant Fritz Suhren, along with "work leader" Hans Pflaum and Schneidermeister Friedrich Opitz (below, see the Second Ravensbrück trial), escaped from prison prior to the first trial. The first two of them were apprehended under assumed names in 1949. They were handed over to French authorities, who were conducting another Ravensbrück trial in Rastatt at that time;