Native American Code Talkers-Codificadores nativos estadounidenses: This is a bilingual (English/Spanish) high interest title, perfect for struggling readers. Secret codes are very important, particularly during wartime. During World War II, the Japanese had managed to crack every code the United States used in military communication. But then a group of Native Americans developed a secret military language, which became the only unbroken code in modern warfare--and helped assure victory for the United States.