page_title: Code talker
section_title: Navajo
hierarchical_section_title: Code talker / Languages / Navajo
caption_attribution_description: English: Code Talkers Monument Ocala, Fl. Memorial Park
context_page_description: A code talker was a person employed by the military during wartime to utilize a little-known language as a means of secret communication. The term is now usually associated with United States service members during the world wars who used their knowledge of Native American languages as a basis to transmit coded messages. In particular, there were approximately 400 to 500 Native Americans in the United States Marine Corps whose primary job was to transmit secret tactical messages. Code talkers transmitted messages over military telephone or radio communications nets using formally or informally developed codes built upon their native languages. The code talkers improved the speed of encryption and decryption of communications in front line operations during World War II.
  There were two code types used during World War II. Type one codes were formally developed based on the languages of the Comanche, Hopi, Meskwaki, and Navajo peoples. They used words from their languages for each letter of the English alphabet. Messages could be encoded and decoded by using a simple substitution cipher where the ciphertext was the native language word.
context_section_description: Philip Johnston, a civil engineer for the city of Los Angeles, proposed the use of the Navajo language to the United States Marine Corps at the beginning of World War II. Johnston, a World War I veteran, was raised on the Navajo reservation as the son of a missionary to the Navajo and was one of the small number of non-Navajo who spoke the language fluently. Many Navajo enlisted shortly after Pearl Harbor and eagerly contributed to the war effort. "What happened to the Navajo were social conflicts", Navajo code talker Albert Smith said. "But this conflict involved Mother Earth being dominated by foreign countries. It was our responsibility to defend her."
  Because Navajo has a complex grammar, it is not mutually intelligible enough with even its closest relatives within the Na-Dene family to provide meaningful information. At the time, it was still an unwritten language, and Johnston believed Navajo could satisfy the military requirement for an undecipherable code. Its complex syntax and phonology, not to mention its numerous dialects, made it unintelligible to anyone without extensive exposure and training. One estimate indicates that at the outbreak of World War II, fewer than 30 non-Navajo could understand the language.
  Early in 1942, Johnston met with Major General Clayton B. Vogel, the commanding general of Amphibious Corps, Pacific Fleet, and his staff. Johnston staged tests under simulated combat conditions which demonstrated that Navajo men could encode, transmit, and decode a three-line English message in 20 seconds, versus the 30 minutes required by machines at that time. The idea was accepted and Vogel recommended that the Marines recruit 200 Navajo. The first 29 Navajo recruits attended boot camp in May 1942. This first group created the Navajo code at Camp Pendleton.
  The Navajo code was formally developed and modeled on the Joint Army/Navy Phonetic Alphabet that uses agreed-upon English words to represent letters. Since it was determined that phonetically spelling out all military terms letter by letter into words while in combat would be too time-consuming, some terms, concepts, tactics, and instruments of modern warfare were given uniquely formal descriptive nomenclatures in Navajo. For example, the word for shark referred to a destroyer, while silver oak leaf indicated the rank of lieutenant colonel.
  A codebook was developed to teach the many relevant words and concepts to new initiates. The text was for classroom purposes only and was never to be taken into the field. The code talkers memorized all these variations and practiced their rapid use under stressful conditions during training. Uninitiated Navajo speakers would have no idea what the code talkers' messages meant; they would hear only truncated and disjointed strings of individual, unrelated nouns and verbs.
  The Navajo code talkers were commended for the skill, speed, and accuracy they demonstrated throughout the war. At the Battle of Iwo Jima, Major Howard Connor, 5th Marine Division signal officer, had six Navajo code talkers working around the clock during the first two days of the battle. These six sent and received over 800 messages, all without error. Connor later stated, "Were it not for the Navajos, the Marines would never have taken Iwo Jima."
  After incidents when Navajo code talkers were captured by other American soldiers, several were assigned a personal bodyguard whose principal duty was to protect them from their own side. According to Bill Toledo, one of the second group after the original 29, they had a secret secondary duty: if their charge was at risk of being captured, they were to shoot him to protect the code. Fortunately, none was ever called upon to do so.
  To ensure a consistent use of code terminologies throughout the Pacific theater, representative code talkers of each of the US Marine divisions met in Hawaii to discuss shortcomings in the code, incorporate new terms into the system, and update their codebooks. These representatives, in turn, trained other code talkers who could not attend the meeting. As the war progresse
caption: Code Talkers Monument Ocala, Florida Memorial Park
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