- published: 17 Jul 2014
- views: 707
The 1943 BRUSA Agreement (Britain–United States of America agreement) was an agreement between the British and US governments to facilitate co-operation between the US War Department and the British Government Code and Cypher School (GC&CS). It followed the Holden Agreement of October 1942.
Colonel Alfred McCormack of the Special Branch of Military Intelligence Service, Colonel Telford Taylor of Military Intelligence, and Lieutenant Colonel William Friedman came to Bletchley Park, the Government Code and Cypher School Headquarters in England in April 1943. The British decided to inform them of "Ultra", their successful decoding of German signals. The American trio worked with Commander Edward Travis (RN), the head of the British communications intelligence (COMINT) facility.
This led to the signing of the 1943 BRUSA Agreement on 17 May, which was a formal agreement to share intelligence information. It covered:
The "Five Eyes", often abbreviated as "FVEY", refer to an intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom and the United States. These countries are bound by the multilateral UKUSA Agreement - a treaty for joint cooperation in signals intelligence. The origins of the FVEY can be traced back to World War II, when the Atlantic Charter was issued by the Allies to lay out their goals for a post-war world. During the course of the Cold War, the ECHELON surveillance system was initially developed by the FVEY to monitor the communications of the former Soviet Union and the Eastern Bloc, although it was later used to monitor billions of private communications worldwide. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA ...
The bombe was an electromechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II. The US Navy and US Army later produced their own machines to the same functional specification, but engineered differently from each other and from the British Bombe. The initial design of the bombe was produced in 1939 at the UK Government Code and Cypher School at Bletchley Park by Alan Turing, with an important refinement devised in 1940 by Gordon Welchman. The engineering design and construction was the work of Harold Keen of the British Tabulating Machine Company. It was a substantial development from a device that had been designed in 1938 in Poland at the Biuro Szyfrów by cryptologist Marian Rejewski, and known as the "cryptolo...