TheCodeBreakers
up. Their 1935 order for 5,000 machines proved the turning point in the
firm's fortunes.
That same year, Hagelin began corresponding with American
cryptologic authorities about the c-36. He went over himself in 1937, and
again in 1939 when war broke out in Europe. Now the United States was
considerably more interested. Friedman suggested improvements, and
Hagelin returned to Sweden to incorporate them and to streamline the
machine for mass production. On April 9, 1940, he was in his cabin in
Dalecarlia when he heard a radio announcement that the Germans had
invaded Norway. His wife told him that if he wanted to do anything with
his machine in the United States, he ought to go there at once.
[Codebreakers 213.jpg]
Boris Hagelin's M-209. 1 Outer cover 2 Inner cover 3 A lug 4 Encipher-decipher knob, set
at D for decipher 5 Paper tape 6 Letter counter 7 Indicating disk, on which input letters