Final answer:
The Navajo tribe was notably used as code talkers during World War II, employing their language to securely transmit military messages. Their contributions, along with those of other Native American tribes, were critical to Allied success.
Step-by-step explanation:
The Native American tribe used as code talkers during World War II were the Navajo. These code talkers played an indispensable role in the Pacific campaign, utilizing their complex native language to transmit encrypted military messages that enemies could not decode. The Navajo code talkers, some of whom were as young as 15, endured rigorous training which involved memorizing up to 17 pages of codes. They could communicate quickly and securely in battle without encryption machines, giving the United States an essential advantage.
In addition to the Navajo, other Native American tribes also contributed to wartime communications, including the Comanche in Europe and the Meskwakis in North Africa. Overall, more than 44,000 Native Americans served across all theaters of the war, demonstrating the value of their linguistic and cultural heritage in military service.