Career
The Warsaw ghetto In 1942 he joined the ZOB. Rotem became particularly useful as a courier for the Warsaw Ghetto fighters. The nickname "Kazik" - an transcript of a Polish name "Kazimierz" (Casimir), which means in Polish "someone who destroys opponent"s prestige/glory during battle". The Warsaw Ghetto Uprising and aftermath As a ZOB member, Kazik took part in the Warsaw ghetto uprising.
He became the head courier, reporting directly to the ZOB commander on the Gentile side, Yitzhak Zuckerman.
(The ZOB commander in general was Mordechai Anielewicz). When it became apparent that the Germans would prevail, he was sent via a secret passageway to the Gentile side of Warsaw where he met with Zuckerman to arrange an escape for the fighters.
However, the passageway was discovered by the Nazis. Unable to return, he and Zuckerman were trapped on the Gentile side while the fighting raged and the ghetto burned.
Desperate to reach his comrades, Rotem made several attempts to enter the ghetto through the sewers before finally succeeding.
There he encountered Zivia Lubetkin, one of the last surviving leaders of the ghetto uprising, and he led her with her team of approximately 80 fighters through the sewers to the Gentile side and then to the forests outside of the city. Throughout the rest of the war he continued his underground activities with the resistance, in particular helping to care for the several thousand Jews, who still remained in Warsaw in hiding. In August 1944, he took part in the Polish Warsaw Uprising.
Immediately following the end of World World War II, Rotem took part in the Beriha organization, that helped European Jews immigrate to Mandate Palestine, despite the restrictions imposed by the British Mandatory policies (White Paper of 1939).
He now lives in Jerusalem. As of 2013, he is one of three survivors of the Warsaw Ghetto Uprising.
In the 2001 television Mini-Series Uprising he is portrayed by actor Stephen Moyer.