4:20 Codebreakers and Agent Sophie | Woeful Second War | Horrible Histories 1:51 High speed morse telegraphy using a straight key 11:52 158,962,555,217,826,360,000 (Enigma Machine) - Numberphile 8:01 All about known Spies, Secret-Agents, Saboteurs, and Codebreakers from around the world! 0:57 Breaking Nazi Codes: The Untold Story of WWII’s Codebreakers (1942) 0:53 Unsung Heroes of War: Spies, Codebreakers, & Art Saviors! #WW2History #UnsungHeroes #Short 1:25 The Codebreaker | American Experience | PBS 1:16 Spies, Code Breakers, And Secret Agents: A World War II Book for Kids by Carole P. Roman 3:20 Famous Spies and Code Breakers 0:32 WWI Espionage Spies and Codebreakers!#shorts #shortsfeed #wwii 0:50 Uncovering the Brilliance of WWII Spies #World War II espionage 5:00 War of Shadows: Codebreakers, Spies, and the Secret Struggle to Drive the Nazis from the Middle East 0:59 How Spy Stopped Nazi U Boats and Won the Battle of the Atlantic WW2 with Invention of....