Researched
Enigma & Rotor Ciphers
Scherbius's rotor machine (patent 1918) becomes the German Enigma; Polish and British codebreakers read it, shaping World War II.
Open in the interactive tree →Enigma scrambled each letter differently using rotating wheels. Rejewski's team broke it from 1932, and Turing and Welchman's Bombe at Bletchley Park automated the search from 1940.