~~From 1942 until 1945, the U.S. Marine Corps recruited over 400

Navajos for duty as communication specialists. These specially trained Navajos, known as Code Talkers, devised an unbreakable voice code to transmit battlefield messages during World War II. From Guadalcanal to Iwo Jima to Okinawa, the Code Talkers transmitted and received military messages in coded Navajo that could not be broken~~