Sigint Historian

Collection Management evolved during the Second World War and was honed to a precision instrument during the Cold War. What I describe belon...

Much of the success of Bletchley Park during the Second World War is owed to the combination of great talent and an atmosphere in which it c...

Chris Smith (@spy_historian) tweeted a series of tweets about the Polish contribution to Enigma cryptanalysis this morning. I copy them here...

This follows on from my previous post, in which I said, referring to a twitter discussion:   'Part of agreeing with @jock_bruce here i...

  This post arises from a brief discussion on Twitter recently of a comment by Jock Bruce that 'If amateurs talk tactics, and profession...

  I promised another extract from Signal . This is another story about the Royal Navy's need for comms discipline, and the lengths to wh...

  In 1993 Captain Barrie Kent RN (Retd) published Signal! A History of Signalling in the Royal Navy . It is one of my favourite books, a ser...