Navajo Code Talkers
The Navajo Code Talkers were an essential key to the U.S. victory in WWII. The U.S. military used Navajo Native Americans to make a code that would be hard for America's enemies to crack. The difficulty of the Navajo language made it hard for enemies to not just understand Navajo, which sounded foreign to almost everyone, but also for what they meant with their words.
The significance of the Navajo Code Talkers is explained further in this video:
The significance of the Navajo Code Talkers is explained further in this video: