June 2019  75 years ago today, more than 150,000 allied troops were boarding planes, gliders and landing craft as they prepared to invade Fortress Europe in Operation Overlord, the Normandy Invasion. Meanwhile, 200 miles away in the Buckinghamshire countryside the Codebreakers of GC&CS were also ready and waiting.  A special section, known as NSV(X), spent the day decrypting German messages and forwarding that vital intelligence to allied commanders. In many cases only two hours after the German operators had sent them. Today at Bletchley Park our Archive holds hundreds of these handwritten decrypts and using a selection of these we tell the story of The Longest Day. Our Research Historian Dr David Kenyon & Research Officer Thomas Cheetham will be your guides. Also Veterans’ Pat Davies & Colette Cook share a couple of short memories from that eventful day. Special thanks to Mr Ben Thomson for playing the role of our Intelligence Officer. Image: ©Bletchley Park Trust 2019 #BPark, #Bletchleypark, #WW2, #DDay75, #BletchleyParkDDay