TheCodeBreakers
firm, which copied the Hagelin variable-gear principle. There is a story
that one of these was found in Norway at the end of the war with a
message still in it, obviously abandoned by an operator who disagreed
with what he had deciphered: Der Fuehrer ist tot. Der Kampf geht welter.
Doenitz ("The Fiihrer is dead. The war goes on, Donitz").
For wire teletypewriter communications from the O.K.H. to army
corps and a few divisions, the Germans used an on-line machine
produced by Siemens & Halske Aktien-gesellschaft. Its heart was a set of
ten keywheels, similar to those on a Hagelin machine, rimmed with pins
that could be made either operative or inoperative. Each wheel had a
prime number of pins, ranging from 47 on the smallest to 89 on the
largest. Five of these wheels enciphered the five teletypewriter pulses,
transforming a mark into a space or vice versa if the pin then in position
was operative, or leaving the pulse unchanged if it was inoperative. The
annaabi.ee 
