Lambros Demetrios Callimahos (December 16, 1910 – October 28, 1977) was a

US Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...

cryptologist This is a list of cryptographers. Cryptography is the practice and study of techniques for secure communication in the presence of third parties called adversaries. Pre twentieth century * Al-Khalil ibn Ahmad al-Farahidi: wrote a (now lost) book ...

and a

flute The flute is a family of classical music instrument in the woodwind group. Like all woodwinds, flutes are aerophones, meaning they make sound by vibrating a column of air. However, unlike woodwind instruments with reeds, a flute is a reedless ...

player.

Early life and education

Callimahos was born in

Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandria ...

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parents; the family emigrated to the

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when he was four. His father was a

journalist A journalist is an individual that collects/gathers information in form of text, audio, or pictures, processes them into a news-worthy form, and disseminates it to the public. The act or process mainly done by the journalist is called journalism ...

. His main interests at school were in chemistry, physics and medicine. He did not show interest in

music Music is generally defined as the art of arranging sound to create some combination of form, harmony, melody, rhythm or otherwise expressive content. Exact definitions of music vary considerably around the world, though it is an aspect ...

until the age of fourteen when he entered

high school A secondary school describes an institution that provides secondary education and also usually includes the building where this takes place. Some secondary schools provide both '' lower secondary education'' (ages 11 to 14) and ''upper seconda ...

Asbury Park Asbury Park () is a beachfront city located on the Jersey Shore in Monmouth County in the U.S. state of New Jersey. It is part of the New York metropolitan area. As of the 2020 U.S. census, the city's population was 15,188

. Callimahos earned a degree in

law Law is a set of rules that are created and are enforceable by social or governmental institutions to regulate behavior,Robertson, ''Crimes against humanity'', 90. with its precise definition a matter of longstanding debate. It has been vario ...

from

Rutgers Rutgers University (; RU), officially Rutgers, The State University of New Jersey, is a public land-grant research university consisting of four campuses in New Jersey. Chartered in 1766, Rutgers was originally called Queen's College, and was a ...

in accord with his fathers' wishes, but attended

Juilliard The Juilliard School ( ) is a private performing arts conservatory in New York City. Established in 1905, the school trains about 850 undergraduate and graduate students in dance, drama, and music. It is widely regarded as one of the most elit ...

music school at the age of nineteen and graduated with a degree in 1933. While he started at the bottom of the class, he became head of his class in his second year after encouragement from his teacher, Arthur Lora. After graduation, he continued study in

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Musical career

His musical debut was in

Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by popu ...

in 1935 and was heralded as ''Meisterfloetist''. He also played in

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

and that autumn played an all-

Bach Johann Sebastian Bach (28 July 1750) was a German composer and musician of the late Baroque period. He is known for his orchestral music such as the '' Brandenburg Concertos''; instrumental compositions such as the Cello Suites; keyboard w ...

programme in

, consisting of the seven sonatas and his own transcription for flute and harpsichord of the B-Minor suite. He had a two-year tour of recitals in

and was appointed to a professorship in the

Mozarteum Mozarteum University Salzburg (German: ''Universität Mozarteum Salzburg'') is one of three affiliated but separate (it is actually a state university) entities under the “Mozarteum” moniker in Salzburg municipality; the International Moz ...

. Two CDs of his performances were recorded and released. In April 1937, he had his first

debut in The Town Hall. He continued to tour both in

and the

World War II

He joined the

United States Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...

in 1941, hoping his interest in

cryptology Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or '' -logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adve ...

could be put to service. He taught

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...

and

cryptanalysis Cryptanalysis (from the Greek ''kryptós'', "hidden", and ''analýein'', "to analyze") refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic sec ...

Fort Monmouth Fort Monmouth is a former installation of the Department of the Army in Monmouth County, New Jersey. The post is surrounded by the communities of Eatontown, Tinton Falls and Oceanport, New Jersey, and is located about from the Atlantic Ocean. Th ...

. He enrolled in a

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

course and eventually served as a

Signals Intelligence Signals intelligence (SIGINT) is intelligence-gathering by interception of ''signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication ( ...

officer in

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Later career

After World War II, he was assigned to the

Army Security Agency The United States Army Security Agency (ASA) was the United States Army's signals intelligence branch from 1945 to 1976. The Latin motto of the Army Security Agency was ''Semper Vigiles'' (Vigilant Always), which echoes the declaration, often ...

as assistant to

William F. Friedman William Frederick Friedman (September 24, 1891 – November 12, 1969) was a US Army cryptographer who ran the research division of the Army's Signal Intelligence Service (SIS) in the 1930s, and parts of its follow-on services into the 1950s. ...

. When the

National Security Agency The National Security Agency (NSA) is a national-level intelligence agency of the United States Department of Defense, under the authority of the Director of National Intelligence (DNI). The NSA is responsible for global monitoring, collecti ...

was formed, both men joined it. During the 1950s he developed the course CA-400, an expansion of Friedman's own intensive-study course. Graduates of the course became members of the Dundee Society. As part of this course he devised the Zendian Problem. He also revised some of Friedman's own work to produce the text ''

Military Cryptanalytics ''Military Cryptanalytics'' (or MILCRYP as it is sometimes known) is a revision by Lambros D. Callimahos of the series of books written by William F. Friedman under the title ''Military Cryptanalysis''. It may also contain contributions by other cr ...

''. In 1955, he established the '' NSA Technical Journal'' and served as technical advisor for the rest of his career. Health problems forced his retirement in 1976.

References

External links

NSA pdf about the Legacy of Lambros D. Callimahos at the NSA
{{DEFAULTSORT:Callimahos, Lambros D. 1910 births 1977 deaths Signals Intelligence Service cryptographers United States Army personnel of World War II National Security Agency cryptographers Egyptian emigrants to the United States