Hajo Holborn

Hajo Holborn (18 May 1902, Berlin – 20 June 1969, Bonn) was a German-American historian and specialist in modern German history.

Hajo Holborn was born the son of Ludwig Holborn, the German physicist and "Direktor der Physikalisch-Technischen Reichsanstalt," and became a student of Friedrich Meinecke at Berlin University, where he achieved a doctor of philosophy in 1924. After establishing at Heidelberg in 1926 as lecturer in medieval and modern history, he became Privatdozent there until he was called back to Berlin as Carnegie Professor of History and International Relationships at the private Deutsche Hochschule für Politik. He was dismissed from his appointments in 1933 by the Nazi government, but he had already left the country.

Unwilling to participate in National Socialism, that same year he fled to the United Kingdom, then emigrated to the United States in 1934. Shortly after coming to America, he was appointed visiting professor of German history at Yale. He taught Diplomatic History at Tufts University, Massachusetts, (1936–1942) and was a guest professor at the University of Vienna, Austria (1955). He became a U.S. citizen and during the Second World War he worked for the Office of Strategic Services as special assistant to the chief of its Research and Analysis Branch, William L. Langer.

After the war, he served as Randolph W. Townsend Professor at Yale until 1959, when he was awarded the title of Sterling Professor of History at Yale University; here he continued to teach and write until his death in 1969.

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