Code talkers: How Navajo men played a major role in the United States' efforts in World War II

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After the end of World War II, a group of 29 Navajo kept a major secret about their time in the United States Marine Corps. And they kept that secret for more than two decades. They were the original Navajo code talkers, who created a code using English and Navajo, which was used for communication during the war. Their code was never broken.

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