Step back in time to when the remote landscapes of Caithness and Bower served as a vital, highly classified nerve centre for British electronic warfare and signals intelligence. New comprehensive research by Andrew Guttridge reveals the hidden history behind nearly 20 secret World War II Y Service, RAF, Navy, Army, and RSS intercept and direction-finding stations scattered around Thurso, Wick, and the surrounding countryside. From tracking German U-boat movements in the North

Off the Normandy beaches on D-Day floated three secret command ships nobody talks about. Converted into floating intelligence hubs bristling with radar and hidden radio rooms, the Fighter Direction Tenders FDT13, FDT216 and FDT217 became the Allies' eyes and ears above the invasion fleet — intercepting German wireless traffic in real time, directing waves of Spitfires overhead, and helping down an estimated 76 Luftwaffe aircraft while losing only one ship to enemy bombing. Th

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