It was implemented constantly in WWII.
hedy lamarr
The 'enigma' coder.
That was the name of the first programmable electronic computer, and it was used to break codes used by the Germans.
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No only world war 2
Mainly horses were used in World War 2. But donkeys were used in World War 1.
nope i have the game and i have completed it and there is no codes]
USA and UK
World War 2. The Allies had it, and the Axis did not.
It was called Codetalking, and the Native Americans who did it were referred to as Codetalkers. The actual language used was Cherokee.
Yes, 2 were used to end the war. This is the only war where they were used.
The swastika is a very old symbol. But to answer your question it was used by the Nazis in World War 2.