Hut 8

Hut 8 was a section in the Government Code and Cypher School (GC&CS) at Bletchley Park (the British World War II codebreaking station, located in Buckinghamshire) tasked with solving German naval (Kriegsmarine) Enigma messages.

[2] After 2005, the first Hut 8 was restored to its wartime condition, and it now houses the "HMS Petard Exhibition".

[3] In 1940, a few breaks were made into the naval "Dolphin" code, but Luftwaffe messages were the first to be read in quantity.

[4] The German navy had much tighter procedures, and the capture of code books was needed (see Battle of the Atlantic § Enigma cipher) before they could be broken.

In addition to the cryptanalysts, around 130 women worked in Hut 8 and provided essential clerical support including punching holes into the Banbury sheets.