British experts decipher the secret code of the German army.

British experts decipher the secret code of the German army.

British experts decipher the secret code of the German army.

On July 9, 1941 the British cryptographers managed to decipher the secret code used by the German army to conduct operations on the Eastern Front.

 Experts had already broken many of the Enigma codes to the Western Front; Enigma machine was more sophisticated than the Germans, used to transmit information secretly coding. The Enigma machine, invented in 1919 by Hugo Koch, a Dutchman, like a typewriter and was originally used for commercial purposes. 

German machine adapted for use in war and considered their coding system was unbreakable. But they were wrong. The British first broke the Enigma code in the German invasion of Poland and intercepted every message sent through the occupation of Holland and France. 

With the German invasion of Russia, the Allies needed to be able to intercept encrypted messages transmitted in this second front, the East. The first breakthrough came on July 9, in relation to air-ground operations in Germany and several keys continue to be broken by the British during the following year. 

These decoded messages are regularly passed on to the Soviet High Command and offensive movements of German troops planned, and return to London for the mass murder of Russian prisoners and victims of Jewish concentration camp.