The Navajo Code Talkers served the United States during World War II, sending top-secret messages across enemy lines from 1942 to 1945. The code these 29 members of the Navajo Nation developed based on their native language was the only one that went unbroken by the Japanese during the war. Of the 29, only three remain and the Spartan Young Marines of Willow Grove traveled to Window Rock, Ariz., last month to meet them, honor them and hear them tell their stories. The Young Marines have been making their trip each summer for more than 15 years. “Meeting these soldiers who selflessly gave of themselves, and their heritage is a life-changing experience for our Young Marines and adult volunteers,” said Col. William P. Davis USMC (Ret), national executive director and CEO of the Young Marines.