Navajo WW-II Pacific Code Talkers - In World War II, the 3,600 Navajo who fought for their country represented the highest proportion of any ethnicity in the US military. Although the majority of them fought on the battlefields as ordinary servicemen, a small group was selected to be used in military communications with the aim of transmitting messages in a form that was not decipherable for the Japanese decoders. The Navajo language was an excellent choice for the task, since there were no Navajo living outside of the United States and the language has never been studied by ethno-linguists. Prior to World War II, no known German or Japanese scientist studied the Navajo language. Moreover, the complex syntax of the language, paired with its elusive pronunciation provided a reliable protection against the Japanese decoders. In most cases, the decoders who were overhearing the transmissions were not even able to write down what they heard, not to speak of deciphering it.