William S. Knudsen
Danish-American automotive industry executive and American general during World War II
About William S. Knudsen
Lived 1879 – 1948 (aged 69). William S. Knudsen was an American executive, businessperson and entrepreneur.
William Signius Knudsen (born Signius Wilhelm Poul Knudsen; March 25, 1879 – April 27, 1948) was a Danish-American automotive industry executive and an American general during World War II.
His experience and success as a key senior manager in the operations sides of Ford Motor Company and then General Motors led the Franklin Roosevelt administration to commission him directly as a lieutenant general in the United States Army to help lead the United States' war materiel production efforts for World War II.
Knudsen became the only civilian in U.S. history to join the Army at such a high initial rank, and under his direction, American industry dramatically increased its military production, including growing aircraft production from fewer than 3,000 planes in 1939 to over 300,000 by war's end.
Background Knudsen was born in Copenhagen to customs officer Knud Peter Knudsen (1837–1908) and his second wife Augusta Pouline Regine Zøllner (1853–1934). He grew up in his childhood home on Voldmestergade 26 in the Kartoffelrækkerne neighborhood with five siblings and six half-siblings. He attended Øster Farimagsgade School and through his half-brother, the teenaged Knudsen got an apprenticeship at a bicycle shop, where he reportedly assembled the first tandem bicycle in Denmark.
Knudsen immigrated to the United States and arrived in New York in February 1900. While employed for a Harlem River shipyard, the foreman wrote down his name as "William S. Knudsen", or "Bill" for short, as the foreman "couldn't be bothered writing down all those initials".
Career Knudsen was working for the John R. Keim Company of Buffalo, New York, a bicycle and auto parts maker, when the Ford Motor Company bought it in 1911 for its steel-stamping experience and tooling.
Knudsen worked for Ford from 1911 to 1921, a decade that saw the formative development of the modern assembly line and true mass production. Working first for the Ford Motor Company and later for General Motors from 1921, Knudsen became an expert on mass production and a skilled manager. At Ford, Knudsen served as production manager of the Highland Park Plant in Michigan.
Knudsen was president of the Chevrolet Division of General Motors from 1924 to 1937 and was president of General Motors from 1937
In January 1942, Knudsen received a commission as a lieutenant general in the U.S. Army, the only civilian ever to join the army at such a high initial rank, and appointed as Director of Production, Office of the Under Secretary of War. In that capacity, he worked as a consultant and a troubleshooter for the War Department.
In both positions, Knudsen used his extensive experience in manufacturing and industry respect to facilitate the largest production job in history. In response to the demand for war materiel, production of machine tools tripled. The total aircraft produced for the U.S. military in 1939 was fewer than 3,000 planes. By the end of the war, America produced over 300,000 planes of which the Boeing B-29 Superfortress benefited greatly from Knudsen's direction. Production of both cargo and Navy ships also increased astronomically. Knudsen's influence not only smoothed government procurement procedures but also led companies that had never produced military hardware to enter the market. America outproduced its enemies. As Knudsen said, "We won because we smothered the enemy in an avalanche of production, the like of which he had never seen, nor dreamed possible."
He was appointed Director of the Air Technical Service Command when it was founded in July 1944 at Patterson Field, Ohio. He served in the Army until his resignation on June 1, 1945.
Personal life
On November 1, 1911, Knudsen married Clara Elisabeth Euler in Buffalo. They had three daughters, Clara, Martha, and Elna, and one son, Semon "Bunkie" Knudsen, who also became a prominent automobile industry executive.
Knudsen was featured on the cover of Time magazine's October 7, 1940 issue. He was a member of Epiphany Lutheran Church (Lutheran Church–Missouri Synod) in Detroit and contributed greatly to the synod's projects around the Detroit area, including buildings for Epiphany Lutheran Church, Outer Drive Faith Lutheran Church, and the Evangelical Lutheran Institute for the Deaf.
Honors and awards Knudsen was awarded the Vermilye Medal by the Franklin Institute in 1941.
He was also appointed a Knight of the Order of the Dannebrog by the Kingdom of Denmark in 1930 and was promoted Grand Cross of the Order of the Dannebrog in 1946.
Knudsen was inducted into the Automotive Hall of Fame in 1968.
His daughter started a scholarship in the name of her parents.
Knudsen was awarded the Distinguished Service Medal in 1944 and again in 1945 for his service in the US Army during World War II. He also received the American Campaign Medal and World War II Victory Medal for his wartime service.
Distinguished Service Medal with oak leaf clusterAmerican Campaign MedalWorld War II Victory Medal
Dates of rank
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Important facts
People in William S. Knudsen's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped William S. Knudsen's
Frequently asked questions
Who was William S. Knudsen?
Danish-American automotive industry executive and American general during World War II
When was William S. Knudsen born?
William S. Knudsen was born on 25 March 1879 in Copenhagen.
When did William S. Knudsen die?
William S. Knudsen died on 27 April 1948 in Detroit.
What was William S. Knudsen's occupation?
William S. Knudsen was an executive, businessperson and entrepreneur.
What nationality was William S. Knudsen?
William S. Knudsen was American.
Sources & further reading
· Wikipedia: William S. Knudsen
Cite this page
APA: Biography.guide. (2026). William S. Knudsen. https://biography.guide/william-s-knudsen/
MLA: "William S. Knudsen." Biography.guide, https://biography.guide/william-s-knudsen/.
Chicago: "William S. Knudsen." Biography.guide. https://biography.guide/william-s-knudsen/.
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