Schumacher wanted to protect Jewish relatives from deportation. Moreover, she believed there were possibilities of negotiating peace with the Soviet Union. Early in 1941, the Schumachers were involved in the attempt to warn the Soviet Union by wireless about the forthcoming German invasion (Operation Barbarossa). In August 1942, they took in the Communist Albert Hößler (or Hoessler), who had lived in the Soviet Union since the 1930s. He parachuted into Germany to support the resistance group's transmission of information to the Soviet Union.