Code Talker, A Novel About the Navajo Marines of World War Two by Joseph Bruchac
"The United States is at war, and 16 year old Ned Begay wants to join the cause- especially when he hears that Navajos are being specifically recruited by the Marine Corps. So he claims he's old enough to enlist, breezes his way through boot camp, and suddenly finds himself involved in a top-secret task, one that's exclusively performed by Navajos. He has become a Navajo code talker. Now Ned must brave some of the heaviest fighting of the war, and with his native Navajo language as code, send crucial messages back and forth to aid in the conflict against Japan."
Softcover, 231 pages (young adult)