They could have used obfuscation/hiding in plain sight: https://www.americanindianmagazine.org/story/code-talkers-legacy-native-languages-helped-turn-tides-both

They could have used obfuscation/hiding in plain sight: https://www.americanindianmagazine.org/story/code-talkers-legacy-native-languages-helped-turn-tides-both-world-wars https://www.americanindianmagazine.org/story/code-talkers-le...