Later he was transferred to work in Russia; his job was to manage valuables. At the beginning of World War II, he was meant to join the Wehrmacht, but since he was in Russia, he avoided conscription. Heinz Rosenberg, however, was deported from Hamburg To Minsk and informed the authorities about Rübe being in Russia On the 31st of August 1942. In November of the same year, Rübe was again transferred to Minsk, in Belarus. At the beginning of 1943 he was stationed in the Fifth Division of Criminal Investigations. Later he was transferred to the IV division that dealt with "Jewish affairs." Rübe served under the command of Otto Müller. On the 5th of February 1943, Eduard Strauch gave the command that the Jews of Slutsk should be "resettled."
This "resettlement" meant extermination, at a later date Rübe argued that he was assigned to a different reserve and shall not be held responsible for the shooting in the second pit.
The Minsk Ghetto
As of April 1943 Rübe became the head of the guards in the Minsk ghetto, he too patrolled the area. In his trial, he reported that he never beat Jews, and the only time he had killed Jews was because they committed crimes, he shot them next to a cemetery. Rübe shot anyone who spoke poorly of the Nazis he also shot the painter Marion Baruch for allegedly stealing a painting. He was also responsible for shooting 30 pregnant women, for the crime of sexual offenses. In July 1944, after his escapade in Minsk he returned to Baden.
Prosecution
In 1946, Rübe was prosecuted for his war crimes, being accused of being involved in 436 killings. Psychological assessments of Rübe described him as a "schizoid personality" and as a "sexual-pathological sadistic."
The final verdict on the 15th of December 1949 was that he was to serve the rest of his days in prison. In 1962, he was released for good behaviour and lived in Karlsruhe until his death on the 23rd of June 1974.
http://law2.umkc.edu/faculty/projects/ftrials/nuremberg/einsatzdec.html
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