You can read about the start of the deportation of the German Jews in Berlin, 75 years ago, on this news article:
The following quote is from the news article:
75 years ago, the Nazis began deporting [Germany’s] Jews to death camps. The infamous Track 17 at Berlin’s Grunewald station was the departure point. Contemporary witness, Horst Selbiger, shares his memories of the “shipments.”
The first deportation left Track 17 of Berlin’s Grunewald station on the 18th October 1941. 1089 children, women and men were taken by force to Lodz [in Poland]. By the end, some 50,000 Jews from Berlin were deported; [they were] victims of the Nazi “Reign of Terror.”
Today, these railway platforms are memorials situated on the edge of the capital [city]. This is where Horst Selbiger [a Holocaust survivor] will be holding his speech. “For me, Track 17 is the train station from where all the suffering began. Us kids were smarter than the grown ups. We knew by 1941 that the Jews were being exterminated like vermin.”
The adults were led to believe otherwise, but Selbiger, who was 13 at the time, as well as his classmates, had already been observing for a long time that the Jews were being carted off.