


Eisenhower Supreme Commander of Allied forces wrote to Sir Stewart Menzies, Chief of the British Secret Intelligence Service (MI6) saying inter alia: Group Captain Eric Malcolm Jones led this activity from 1943 and after the war became deputy director, and in 1952 director of GCHQ. Hut 3 thus became an intelligence agency in its own right, providing information of great strategic value, but rarely of operational use. It produced military intelligence codenamed ULTRA from the decrypts of Enigma, Tunny and multiple other sources. It retained the name for its functions when it moved into Block D. Hut 3 was a section of the Government Code and Cypher School (GC&CS) at Bletchley Park during World War II.
