Appalachian Figures Series – The Story of Frank B. Rowlett of Lee, Virginia
In the mountains of Lee County, Virginia, Rose Hill sits near old roads, creek bottoms, and the long shadow of Cumberland Mountain. It is the kind of place that usually enters history through land grants, churches, family cemeteries, frontier stations, and county records. Yet one of its sons carried the name of Rose Hill into some of the most secret rooms of the twentieth century.
Frank Byron Rowlett was born at Rose Hill on May 2, 1908. Long before his work could be spoken of in public, he became one of the early figures in American cryptology, the science of making and breaking secret communication. His career stretched from the small beginning of the Army’s Signal Intelligence Service in 1930 through World War II, the Armed Forces Security Agency, the Central Intelligence Agency, and the National Security Agency.
For years, much of his work was hidden by classification. The public knew little about the men and women who broke foreign codes or protected American messages. Even after the war, secrecy held many of the details back. Later declassified records, official NSA histories, congressional records, oral histories, and Rowlett’s own memoir have made it possible to see the outline of his life more clearly.
That outline begins not in Washington, but in Lee County.
From Rose Hill to Emory and Henry
Rowlett grew up in far southwestern Virginia, in a section of Appalachia often treated as remote by the outside world. Rose Hill was not a place most people connected with national intelligence, diplomatic secrets, or machines built to guard the highest levels of military communication. But Appalachian history is full of lives that moved from small communities into much larger stories.
Rowlett attended Emory and Henry College, where he graduated in 1929. College records identify him as a mathematics and chemistry graduate, and they also note that he received the Byars Medal in Science. His background in mathematics mattered. The work he would enter was not the spy fiction version of codebreaking. It required patience, pattern recognition, statistical thinking, and a willingness to spend months or years wrestling with systems designed to reveal nothing.
In 1930, William F. Friedman hired Rowlett into the Army’s Signal Intelligence Service, often called SIS. Rowlett was the first of Friedman’s original employees. He entered as a junior cryptanalyst on April 1, 1930, a date he later remembered with some humor because it was April Fool’s Day.
The office he entered was small. The United States had shut down Herbert O. Yardley’s earlier Black Chamber after Secretary of State Henry Stimson objected to peacetime codebreaking. The new Army effort had to grow quietly. Its early workers were expected to learn cryptology, produce secure American systems, and begin studying foreign communications. They were not stepping into a large, polished agency. They were helping build the foundation of one.
The Small Beginning of American Cryptology
The early Signal Intelligence Service was not the vast wartime operation it would later become. It began with only a few people, a small mission, and a great deal of uncertainty. Rowlett, Abraham Sinkov, and Solomon Kullback became part of the first generation of American government cryptanalysts trained under Friedman.
The work was slow and exacting. They studied older systems, created training material, prepared American codes and ciphers, and examined foreign diplomatic systems. Rowlett’s 1935 War Department technical paper, “Further Applications of the Principles of Indirect Symmetry of Position in Secondary Alphabets,” shows how technical and mathematical his early work became. Even the title suggests the distance between public fame and the kind of labor that actually shaped cryptologic history.
That paper was not written for newspaper readers or public praise. It was written for cryptanalysts. It belonged to a world of alphabets, substitutions, cipher tables, and repeated patterns. It is one of the surviving primary sources that shows Rowlett not merely as a later honored figure, but as an active technical worker during the formative years of American signals intelligence.
In those years, the SIS worked on both sides of the cryptologic problem. It tried to make American communication safer, and it tried to read the protected communication of other governments. That double mission would define much of Rowlett’s career.
RED, PURPLE, and the Japanese Diplomatic Systems
By the mid 1930s, Rowlett and his colleagues were studying Japanese diplomatic ciphers. One of the first major systems solved by the SIS was known to the Americans as RED. This was a Japanese machine system used for diplomatic communication. Its solution gave the American codebreakers experience with a kind of problem that would soon grow harder.
The more famous system was PURPLE, the American name for a sophisticated Japanese diplomatic cipher machine introduced before the United States entered World War II. PURPLE was not a simple codebook that could be solved by matching words one by one. It was a machine cipher, and the Americans did not have a captured machine to study. They had to reconstruct the logic of the system from intercepted messages.
Rowlett played a major role in that work. Official NSA accounts credit him with a central part in the 1939 and 1940 effort against PURPLE. The Virginia historical marker for “Lee County Code Breakers” states that Rowlett led the SIS team that cracked PURPLE in 1940. The breakthrough helped produce diplomatic intelligence from Japanese messages, including material that later became part of the intelligence stream known as MAGIC.
This was not a magic trick, despite the later name. It was a hard, fragile, human achievement. Codebreakers had to find order inside confusion. They had to test wrong ideas, discard them, and return again to columns of letters that seemed designed to resist all human patience. Rowlett later summarized one part of his contribution with a simple line: “I was the one who believed it could be done.”
That sentence carries weight. In codebreaking, belief alone solves nothing. But without someone who believes a system can be solved, the long work can die before the pattern appears.
SIGABA and the Protection of American Messages
Rowlett’s importance did not rest only on breaking foreign systems. He also helped protect American communications. That side of his work is tied most closely to SIGABA, also known as the ECM II cipher machine.
During World War II, secure communication was a matter of life and death. Armies and navies had to send orders across oceans, between commands, and through dangerous channels. If an enemy could read those messages, ships could be sunk, soldiers could be trapped, and entire campaigns could be compromised.
Friedman and Rowlett helped develop the ideas behind a more secure American cipher machine. Working with the Navy, that effort led to SIGABA. Official NSA accounts describe SIGABA as a cipher machine the Axis powers never solved during the war. In a conflict where the breaking of secret messages could change the movement of fleets and armies, the ability to protect American communication mattered as much as the ability to read the messages of others.
The public often remembers World War II codebreaking through famous names like Enigma, Bletchley Park, and the breaking of Axis systems. Rowlett’s story reminds readers that American cryptologic history had another side. The United States also needed machines and systems strong enough to withstand enemy cryptanalysts. SIGABA became one of the great examples of that protective work.
For Rowlett, this meant that his career stood on both sides of the secret war. He helped open foreign communications, and he helped close American ones against foreign eyes.
War Work and a Larger Organization
As World War II expanded, so did the American cryptologic effort. What began as a tiny interwar office grew into a far larger wartime system. Rowlett rose within that world. From 1943 to 1945, he served as chief of the General Cryptanalytic Branch. From 1945 to 1947, he served as chief of the Intelligence Division.
Those titles can sound dry, but they place him near the center of an intelligence machine that had become essential to war planning and postwar security. The men and women working in these branches handled problems most citizens never saw. Their results went upward into military and government channels, while their names remained largely unknown.
After the war, the cryptologic mission did not disappear. Instead, it changed shape. The United States entered the Cold War, and signals intelligence became part of the permanent national security structure. Rowlett served from 1949 to 1952 as technical director in the Office of Operations of the Armed Forces Security Agency, the organization that preceded the National Security Agency.
The transition from wartime codebreaking to Cold War intelligence was not simple. Agencies changed. Missions changed. Personal conflicts also shaped careers. Rowlett eventually left for the Central Intelligence Agency in 1952 after disagreements within the early NSA environment. He worked at the CIA until 1958, then returned to NSA as Special Assistant to the Director.
His career shows how closely connected the early American intelligence organizations were. The same technical expertise could move from Army cryptology to national security work, from AFSA to CIA, and back to NSA.
Honors After Years of Secrecy
Because Rowlett’s work was secret, public recognition came slowly and in unusual forms. In 1964, Congress passed Private Law 88-358, “For the relief of Frank B. Rowlett.” The law authorized a payment of $100,000 to Rowlett in settlement for rights connected to classified cryptologic inventions and patent applications that had been placed under secrecy orders. It is one of the clearest federal records showing that his inventions had real value, even if the details could not be fully displayed to the public.
On March 2, 1966, President Lyndon B. Johnson presented Rowlett with the National Security Medal at the White House. The citation named him as Special Assistant to the Director of NSA and praised more than three decades of cryptologic service. The language of the citation reflected what many ordinary readers could not yet know in detail. Rowlett had advanced a field that remained hidden from public view, but his service had already become important enough for presidential recognition.
He retired from federal service in 1966. Later, the NSA named a major award for him, and he was inducted into the NSA Cryptologic Hall of Honor in 1999. These honors helped bring his name out from behind the curtain of secrecy that had covered most of his working life.
Rowlett died on June 29, 1998, at the age of ninety. The official Veterans Legacy Memorial identifies his World War II service, his U.S. Army rank of colonel, and his burial at Sarasota Memorial Park.
Lee County Code Breakers
In 2019, the Virginia Department of Historic Resources approved a historical highway marker titled “Lee County Code Breakers.” The marker connects Rowlett with another Rose Hill figure, Gene Grabeel, who became tied to the VENONA project. Together, their stories give Rose Hill a remarkable place in American cryptologic history.
The marker’s wording is important because it brings national intelligence history back to local ground. It does not leave Rowlett only in the world of Washington agencies, classified rooms, and technical files. It remembers that he grew up in Rose Hill, seven miles northeast of the marker’s proposed location. It places him where Appalachian history can claim him.
That matters. Too often, Appalachian communities are treated as places acted upon by larger forces rather than places that send people into those larger forces. Rowlett’s life complicates that picture. A boy from Lee County became one of the builders of modern American cryptology. His work touched World War II, Cold War intelligence, secure military communication, and the institutional history of NSA.
The Quiet Labor Behind the Secret War
Frank Rowlett was not a battlefield general, a public politician, or a famous inventor in the usual public sense. His most important achievements were hidden by design. The country depended on his silence. For much of his life, the very work that made him historically important could not be openly explained.
That secrecy can make his story hard to tell. There are no campaign speeches to quote, no public rallies to describe, and no battlefield monuments built in the moment of victory. Instead, the sources are technical papers, oral histories, declassified NSA profiles, congressional laws, institutional biographies, and late public honors. They require patience from the historian, much like the ciphers required patience from the cryptanalyst.
But the story is worth recovering. Rowlett’s life shows that Appalachian history reaches into places not always associated with the mountains. It reaches into federal offices, wartime laboratories, diplomatic messages, and machines built to protect lives at sea and on land. His life also reminds us that intelligence history was not made only by large agencies. It was made by individuals who learned, tested, doubted, persisted, and sometimes believed a thing could be done before anyone else could prove it.
Frank Byron Rowlett began in Rose Hill, Lee County, Virginia. From there, he entered one of the most secret professions in American life. He helped break PURPLE. He helped build SIGABA. He helped shape the institutions that became central to American cryptology. For decades, much of that work could not be spoken aloud.
Today, the records allow his name to be placed back where it belongs, both in the history of American intelligence and in the history of Appalachia.
Sources & Further Reading
Rowlett, Frank B. The Story of Magic: Memoirs of an American Cryptologic Pioneer. Foreword and epilogue by David Kahn. Laguna Hills, CA: Aegean Park Press, 1998. https://library.marshallfoundation.org/portal/Default/en-US/RecordView/Index/31520
Rowlett, Frank B. “Further Applications of the Principles of Indirect Symmetry of Position in Secondary Alphabets.” War Department, Office of the Chief Signal Officer, 1935. NSA Friedman Collection. https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/friedman-documents/publications/FOLDER_227/41760609079975.pdf
National Security Agency. “Frank B. Rowlett.” NSA Cryptologic Hall of Honor. Accessed June 11, 2026. https://www.nsa.gov/History/Cryptologic-History/Historical-Figures/Historical-Figures-View/Article/1623037/frank-b-rowlett/
National Security Agency. “Frank B. Rowlett.” Cryptologic Spectrum. Declassified PDF. Accessed June 11, 2026. https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/cryptologic-spectrum/frank_rowlett.pdf
National Security Agency. “Frank Rowlett.” Cryptologic Almanac, 50th Anniversary Series. Declassified PDF. Accessed June 11, 2026. https://media.defense.gov/2021/Jun/29/2002751863/-1/-1/0/FRANK_ROWLETT.PDF
National Security Agency. “NSA-OH-01-74 to 12-74-ROWLETT-MDR-80299.” Oral history interview with Frank B. Rowlett. Declassified PDF. Accessed June 11, 2026. https://media.defense.gov/2021/Dec/03/2002902964/-1/-1/0/OH_01-74_TO_12-74_ROWLETT_MDR_80299.PDF
National Security Agency. “NSA-OH-1976-1-10-ROWLETT.” Oral history interview with Frank B. Rowlett. Declassified PDF. Accessed June 11, 2026. https://media.defense.gov/2021/Oct/05/2002868610/-1/-1/0/NSA-OH-1976-1-10-ROWLETT.PDF
National Security Agency. “NSA OH 1982-05 and NSA OH 1985-10: Frank B. Rowlett Oral Histories.” Released through Mandatory Declassification Review. GovernmentAttic.org, 2023. https://www.governmentattic.org/50docs/NSA2ohiFrank_Rowlett1983_1985.pdf
United States Congress. “Private Law 88-358, For the Relief of Frank B. Rowlett.” United States Statutes at Large 78, October 13, 1964. https://www.govinfo.gov/content/pkg/STATUTE-78/pdf/STATUTE-78-Pg1199-4.pdf
Johnson, Lyndon B. “Citation Accompanying the National Security Medal Presented to Frank Byron Rowlett.” March 2, 1966. The American Presidency Project. https://www.presidency.ucsb.edu/documents/citation-accompanying-the-national-security-medal-presented-frank-byron-rowlett
Virginia Department of Historic Resources. “Eight New Historical Highway Markers Approved.” April 22, 2019. https://www.dhr.virginia.gov/blog-posts/eight-new-historical-highway-markers-approved/
Emory & Henry University. “Frank Byron Rowlett.” Accessed June 11, 2026. https://www.emoryhenry.edu/live/profiles/6-frank-rowlett
U.S. Army Military Intelligence Hall of Fame. “Colonel Frank B. Rowlett, U.S. Army, Retired.” Accessed June 11, 2026. https://www.ikn.army.mil/apps/MIHOF/biographies/Rowlett%2C%20Frank.pdf
U.S. Department of Veterans Affairs. “Frank B. Rowlett.” Veterans Legacy Memorial. Accessed June 11, 2026. https://www.vlm.cem.va.gov/FRANKBROWLETT/60A2F
Mucklow, Timothy J. The SIGABA/ECM II Cipher Machine: “A Beautiful Idea.” Fort Meade, MD: Center for Cryptologic History, National Security Agency, 2015. https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/technology/The_SIGABA_ECM_Cipher_Machine_A_Beautiful_Idea3.pdf
Burke, Colin B. It Wasn’t All Magic: The Early Struggle to Automate Cryptanalysis, 1930s-1960s. Fort Meade, MD: Center for Cryptologic History, National Security Agency, 2002. https://www.governmentattic.org/8docs/NSA-WasntAllMagic_2002.pdf
Johnson, Thomas R. American Cryptology during the Cold War, 1945-1989, Book I: The Struggle for Centralization, 1945-1960. Fort Meade, MD: Center for Cryptologic History, National Security Agency, 1995. https://www.governmentattic.org/docs/NSA_AmerCryptColdWarBk1.pdf
Johnson, Thomas R. American Cryptology during the Cold War, 1945-1989, Book II: Centralization Wins, 1960-1972. Fort Meade, MD: Center for Cryptologic History, National Security Agency, 1995. https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/cryptologic-histories/cold_war_ii.pdf
Wilcox, Jennifer. Sharing the Burden: Women in Cryptology during World War II. Fort Meade, MD: Center for Cryptologic History, National Security Agency, 1998. https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/wwii/sharing_the_burden.pdf
National Park Service. “The ‘Code Girls’ of Arlington Hall Station: Women Cryptologists of the Second World War.” September 21, 2023. https://www.nps.gov/articles/000/the-code-girls-of-arlington-hall-station-women-cryptologists-of-the-second-world-war-teaching-with-historic-places.htm
Washington Post. “WWII Cryptographer Frank B. Rowlett Dies at 90.” July 1, 1998. https://www.washingtonpost.com/archive/local/1998/07/01/wwii-cryptographer-frank-b-rowlett-dies-at-90/28570114-cf63-4449-b9b8-35807340de79/
Washington Post. “A Major Intelligence.” July 27, 1998. https://www.washingtonpost.com/archive/opinions/1998/07/27/a-major-intelligence/4795181e-0ebe-4a0c-9edd-2ee3d59cae3c/
Saxon, Wolfgang. “Frank B. Rowlett, 90, Wizard in Making and Breaking Codes.” New York Times, July 2, 1998. https://www.nytimes.com/1998/07/02/us/frank-b-rowlett-90-wizard-in-making-and-breaking-codes.html
Kahn, David. The Codebreakers: The Story of Secret Writing. New York: Macmillan, 1967. https://books.google.com/books/about/The_Codebreakers.html?id=oU1CAAAAIAAJ
Gannon, James. Stealing Secrets, Telling Lies: How Spies and Codebreakers Helped Shape the Twentieth Century. Washington, DC: Brassey’s, 2001. https://books.google.com/books/about/Stealing_Secrets_Telling_Lies.html?id=AKeGAAAAMAAJ
Mundy, Liza. “The Women Code Breakers Who Unmasked Soviet Spies.” Smithsonian Magazine, September 2018. https://www.smithsonianmag.com/history/women-code-breakers-unmasked-soviet-spies-180970034/
Historical Marker Database. “Lee County Code Breakers.” Accessed June 11, 2026. https://www.hmdb.org/m.asp?m=162938
Appalachian Regional Commission. “Appalachian Counties Served by ARC.” Accessed June 11, 2026. https://www.arc.gov/appalachian-counties-served-by-arc/
Appalachian Regional Commission. “Virginia.” Accessed June 11, 2026. https://www.arc.gov/appalachian-states/virginia/
Author Note: Frank Rowlett’s story is a reminder that Appalachian history reaches into places far beyond the mountains, including the secret rooms of American intelligence. I have used official records, declassified NSA material, institutional sources, and Rowlett’s own words wherever possible so the Lee County connection stays grounded in evidence.