About Hans Thomsen
Lived 1891 – 1968 (aged 77). Hans Thomsen was a German diplomat and jurist.
Hans Thomsen (14 September 1891 – 31 October 1968 ) was a German diplomat in the United States.
Career Thomsen was a son of the Norwegian-born banker Carlo Z. Thomsen. Hans Thomsen held the dr. juris degree, and entered the foreign service in 1919. After being stationed at the consulates-general in Milan and Naples from 1921, he was summoned back to Germany in 1923 where he subsequently advanced in the Ministry of Foreign Affairs ranks.
Thomsen continued as a diplomat for the Third Reich. Thomsen served as Chargé d'Affaires at the Embassy of Germany in Washington, representing the German government in the U.S. from November 1938 (after the recall of ambassador Hans-Heinrich Dieckhoff) to December 11, 1941 (termination of relations after declaration of war). In 1943 he replaced Victor zu Wied (the brother of William, Prince of Albania) at the German delegation in Stockholm, Sweden, remaining there to the end of the war. In November 1944 as relations deteriorated, he was recalled to Germany. Thomsen was interrogated prior to the Nuremberg tribunals but was not charged with any crime. In the early 1950s he served as head of the Hamburg chapter of the Red Cross.
Thomsen and the isolationists Like Dieckhoff, Thomsen suffered no illusions about the U.S. administration's policy towards Nazi Germany, and he sent warnings to the German government advising them of President Roosevelt's hostility. Therefore, he was involved in several attempts to drum up American isolationist opinion, including efforts to get American authors to write in opposition to American involvement in the War. Thomsen also orchestrated a campaign to influence the 1940 Republican National Convention to pass an anti-war platform. Thomsen reported to the German foreign ministry on June 12, 1940 that a "well-known Republican congressman" had offered to take a group of fifty isolationists to the convention in exchange for $3,000 . Thomsen asked for funds for this and for full page advertisements to be placed in newspapers during the convention. Fish does not appear to have been personally involved in these efforts, though he headed the National Committee to Keep America Out of Foreign Wars which sponsored the ads.
Thomsen and Donovan Just before the Pearl Harbor attack, Thomsen was involved in a curious attempt by William Donovan, the United States Coordinator of Information, to recruit him entirely to the American side. Thomsen had been supplying information on German military strength and movements to Malcolm Lovell, a real estate developer involved in Quaker anti-war efforts. Lovell understood himself to be an intermediary and passed the information on to Donovan. These messages included various warnings about Japanese actions and their consequences, including warnings that the Japanese Empire was compelled by its position to attack the United States; Donovan and Roosevelt were not entirely sure what to make of this information; nonetheless, just before the attack, Donovan offered Thomsen a million dollars in exchange for a public statement distancing himself from the Nazi regime. Donovan's efforts failed, and Thomsen returned to Germany at the end of the year as the U.S. entered the war.
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Important facts
People in Hans Thomsen's life
Named in this biography and alive at the same time
Contemporaries
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Frequently asked questions
Who was Hans Thomsen?
German Nazi diplomat, ambassador in Washington and Stockholm (1891-1968)
When was Hans Thomsen born?
Hans Thomsen was born on 14 September 1891 in Hamburg.
When did Hans Thomsen die?
Hans Thomsen died on 31 October 1968 in Hamburg.
What was Hans Thomsen's occupation?
Hans Thomsen was a diplomat and jurist.
What nationality was Hans Thomsen?
Hans Thomsen was German.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Hans Thomsen. https://biography.guide/hans-thomsen/
MLA: "Hans Thomsen." Biography.guide, https://biography.guide/hans-thomsen/.
Chicago: "Hans Thomsen." Biography.guide. https://biography.guide/hans-thomsen/.
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