Unbreakable: The Navajo Code Talkers - The History Reader

This was one of the most brilliant concepts of WWII. Before the creation of the Navajo code, the Japanese had cracked every code the US used. The original 29 Navajo Code Talkers took their unwritten language and created a double code with it. The Navajo language doesn't have words for many of the military terms that were needed, so they substituted other words for them. For example, the Navajo word for "buzzard" meant "bomber" and the word for "submarine" was "iron fish." Even native Navajo speakers who didn't know the code couldn't understand it. One of the best primary sources about the impact that the Code Talkers had on the War in the Pacific is the 2011 book, "Code Talker: The first and only memoir by one of the original Navajo code talkers of WWII" by Chester Nez.