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.
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 hiding in Warsaw.
After making friends with Poles who worked in the bakery, Rotem got the manager drunk, made copies of the keys, and returned them before he sobered up.
[5] He also 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).
Therefore, I vehemently oppose the distorted law recently passed in Poland, meant to eradicate from historical recollection the heinous acts the Poles committed against the Jewish people during that dark time.