Answer:
Hi there . is it an anime?
Because the soviets had previously signed a Non-Aggression pact with Germany and didn't expect the attack from Hitler (A.K.A Germany.)
Hoped this helped!
Code talkers transmitted messages over military telephone or radio communications nets using formally or informally developed codes built upon their native languages. The code talkers improved the speed of encryption and decryption of communications in front line operations during World War II
