what is this committee about?
It was a small committee of Zionists in Budapest, who helped Hungarian Jews escape the Holocaust during the German occupation of Hungary.
Aid and Rescue Committee
The Aid and Rescue Committee, or "Va'adat Ha-Ezrah ve-ha-Hatzalah be-Budapesht" ("Vaada" for short; name in ) was a small committee of Zionists in Budapest, Hungary, in 1944–1945, who helped Hungarian Jews escape the Holocaust during the German occupation of that country. 
what is joel brand's profession? UNANSWERABLE who was he? He was a member of the Budapest Aid and Rescue Committee.
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Aid and Rescue Committee [SEP] Introduction
The Aid and Rescue Committee, or "Va'adat Ha-Ezrah ve-ha-Hatzalah be-Budapesht" ("Vaada" for short; name in ) was a small committee of Zionists in Budapest, Hungary, in 1944–1945, who helped Hungarian Jews escape the Holocaust during the German occupation of that country. The Committee was also known as the Rescue and Relief Committee, and the Budapest Rescue Committee. The main personalities of the "Vaada" were Ottó Komoly, president; Rudolf Kasztner, executive vice-president; Samuel Springmann, treasurer; and Joel Brand, who was in charge of "tijul" or the underground rescue of Jews. Other members were Hansi Brand (Joel Brand's wife); Erno Szilagyi from the left-wing "Hashomer Hatzair".