How did members of the Navajo nation contribute to the Allied war effort in the Pacific? (in a short paragraph)

In 1942, 29 Navajo men joined the U.S. Marines and developed an unbreakable code that would be used across the Pacific during World War II. The Navajo Code Talkers participated in all assaults the U.S. Marines led in the Pacific from 1942 to 1945, including Guadalcanal, Tarawa, Peleliu and Iwo Jima.

Explanation:

same