In mid-march, Adolf Hitler escaped a first assassination attempt since the bomb stashed on board of the airplane, where it had taken place does not explode. The icy cold of the cargo hold had frozen the detonator. Also, the military high-ranking officers, gathered around the general Henning von Tresckow decided to make a second attempt on 21 march 1943. Colonel baron Rudolf-Christoph von Gersdorff, aged 37 years, agrees to blow himself up with Hitler during a visit to the exhibition devoted to the weapons taken to the Soviets, the Arsenal in Berlin. As the curator of the exhibition, it…