A biography of the leading halakhic authority Jehiel Jacob Weinberg, born in Ciechanowiecz, Poland. He was the last rector of the Berlin Rabbinical Seminary. Ch. 5 (pp. 110-134), "Response to the New Nazi Government (1933-1934), " characterizes the early reaction of Weinberg to the Nazis as naive and apologetic. Weinberg helped the Orthodox Jews deal with problems of daily life under the Nazis (e.g. the ban on ritual slaughter). Ch. 6 (pp. 135-171), "The Nazi Era (1933-1945), " notes that Orthodox German Jews first adopted a policy of appeasement with the regime. With Jews excluded from general education and other aspects of German life, the role of the Seminary became more important. Weinberg had opposed Jewish emigration, and the "Kristallnacht" pogrom came as a tremendous shock to him; the Seminary was closed and most of the students and faculty emigrated. At the outbreak of the war he was in Warsaw, where he helped with communal affairs. As a Soviet citizen, Weinberg suffered less than others; in October 1941 he was transferred from the Warsaw ghetto to a detention camp in Wuelzburg, Germany, possibly in order to trade him for German citizens held captive in the USSR. He remained there until April 1945. Most of his family was murdered in the Holocaust. After the war he became head of a yeshiva in Montreux, Switzerland.