Rasterschlüssel 44

Rasterschlüssel 44 - A German manual transposition cipher was introduced by the German Armed Forces in March 1944.

Full details of the deployment of this cipher system and of Bletchley Park's cryptanalysis of RS44 can be found in the Cryptologia paper:

Cowan. Michael, J. 2004. Rasterschlüssel 44 -- The Epitome of Hand Field Ciphers. Cryptologia 28(2) :115-148

A Windows implementation of Rasterschlüssel 44 can be downloaded Here
This requires Windows 95/98. 2000 or XP.