What was the critical task of a Navajo Code Talker on the battlefield?

The critical task of a Navajo Code Talker on the battlefield was to encode, transmit, and decode messages quickly. This role was essential for secure communications within the U.S. military during World War II. The use of the Navajo language as a code proved to be highly effective because it was complex, hard for enemies to understand, and could be communicated rapidly. The ability to relay information swiftly and securely helped to coordinate military operations and maintain the element of surprise.

Leading ground troops, operating heavy machinery, or managing logistics, while important roles within the military, were not the primary function of the Code Talkers. Their distinctive expertise in communication using the Navajo language was what set them apart and made them invaluable during combat situations.