Joel Greenberg
@joelgreenberg.bsky.social
Historian researching the use of signals intelligence in the 20th century. Authorised biographer of Alastair Denniston and Gordon Welchman.
I was honoured to be asked to edit, index and introduce this classic book. Available for Preorder now at www.pen-and-sword.co.uk/Top-Secret-U...
Top Secret Ultra
Shortly after the outbreak of the Second World War, a young Peter Calvocoressi was serving in the Ministry of Economic Warfare, his role largely consisting…
www.pen-and-sword.co.uk
December 1, 2024 at 10:07 PM
I was honoured to be asked to edit, index and introduce this classic book. Available for Preorder now at www.pen-and-sword.co.uk/Top-Secret-U...