one Iwo Jima code talkers served in World War II . Military authorities chose Navajo as a code language because it was almost impossible for a non-Navajo to learn and had no written form . They transmitted key messages from the front line in their native language . The Marines never managed to crack the code . Only a few code talkers remain alive late Thursday .
one Iwo Jima code talkers served in World War II . They transmitted key messages from the front line in their native language . The Marines never managed to crack the code . Only a few code talkers remain alive late Thursday .