The Testery was a section at Bletchley Park, the British codebreaking station during World War II, headed by Major Ralph Tester. The Testery employed hand methods to solve the Fish traffic, but later invented the Dragon and Proteus electronic cribbing machines. During World War II, codebreakers at Bletchley Park decrypted and interpreted messages from a large number of Axis code and cipher systems, including the German Enigma machine. ... Cryptanalysis (from the Greek kryptós, hidden, and analýein, to loosen or to untie) is the study of methods for obtaining the meaning of encrypted information without access to the secret information which is normally required to do so. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... Ralph P.[1] Tester was an administrator at Bletchley Park, the British codebreaking station during World War II. He founded and supervised a section named the Testery, whose task was to solve a high-grade German teleprinter cipher codenamed Tunny. Before World War II, Tester was an accountant who had... Fish (sometimes FISH) was the Allied codename for any of several German teleprinter stream ciphers used during World War II. While a large number of links were monitored, at least three different encryption systems were distinguished: Tunny — the Lorenz SZ 40/42 from Lorenz Electric. ...

The Testery was formed in July 1942 under Major Ralph Tester, who had previously led a small group working on a German hand cipher.^[1]

Max Newman was originally in the Testery until the Newmanry section was created on 1 February 1943 to develop and employ machine methods for the Fish traffic. Maxwell Herman Alexander Newman (February 7, 1897 – February 22, 1984) was a British mathematician. ... The Newmanry was a section at Bletchley Park, the British codebreaking station during World War II. Its job was to develop and employ machine methods to help break a German teleprinter cipher machine known as Tunny on the British side, or as the Lorenz SZ 40/42 on the German... Fish (sometimes FISH) was the Allied codename for any of several German teleprinter stream ciphers used during World War II. While a large number of links were monitored, at least three different encryption systems were distinguished: Tunny — the Lorenz SZ 40/42 from Lorenz Electric. ...

By May 1945, the Testery had grown to 118 personnel.^[1]

List of Testery personnel

• Peter Benenson
• Peter Hilton
• Roy Jenkins
• Max Newman, head of the Newmanry
• Ralph Tester, head of the Testery
• Donald Michie

Peter James Henry Solomon Benenson (July 31, 1921 – February 25, 2005) was an English lawyer and the founder of human rights group Amnesty International (AI). ... Wikipedia does not yet have an article with this exact name. ... Roy Harris Jenkins, Baron Jenkins of Hillhead, OM, PC (November 11, 1920 – January 5, 2003) was a British politician and a prominent Labour Member of Parliament in the 1960s and 1970s, and founding member of the Social Democratic Party (SDP). ... Maxwell Herman Alexander Newman (February 7, 1897 – February 22, 1984) was a British mathematician. ... The Newmanry was a section at Bletchley Park, the British codebreaking station during World War II. Its job was to develop and employ machine methods to help break a German teleprinter cipher machine known as Tunny on the British side, or as the Lorenz SZ 40/42 on the German... Ralph P.[1] Tester was an administrator at Bletchley Park, the British codebreaking station during World War II. He founded and supervised a section named the Testery, whose task was to solve a high-grade German teleprinter cipher codenamed Tunny. Before World War II, Tester was an accountant who had... Donald Michie was born on 11 November 1923, and was educated at Rugby School and Balliol College, Oxford. ...

References

1. ^ ^{a b} Jerry Roberts, "Major Tester's Section", p. 250 from pp. 249-259 in B. Jack Copeland, ed., Colossus: The Secrets of Bletchley Park's Codebreaking Computers, Oxford University Press, 2006