[Ianto.W.]

Got the location wrong the work was done at Blechley Park, when Turing and his fellow mathematicians had the gist of how the code woked, on a random number daily change system, each service had its own codes (army,navy, luftwaffe), a machine was developed to assist in the sorting of bollions of different combinations. This cut the 'options' and they then hand sorted the codes many women and men made up the team. Now then Steeljack let us have 'John Waynes' version.