Kinsel used the unbreakable code developed from the Navajo language to help pass important messages in World War II.

John Kinsel Sr., one of the last remaining Navajo Code Talkers who transmitted messages during World War II based on the tribe’s native language, has died. He was 107. Navajo Nation officials in Window Rock announced Kinsel’s death on Saturday.

The Navajo Nation is mourning the loss of one of their own, one of the last Navajo Code Talkers, whose contributions were pivotal in World War II.

Navajo Code Talker John Kinsel Sr., among the last of the famed World War II messengers, is dead at 107. Navajo Nation officials in Window Rock announced Kinsel's death on Saturday. Tribal President Buu Nygren has ordered all flags on the reservation to be flown at half-staff until Oct.

He was part of the second group of Marines trained as code talkers at Camp Elliott, Calif., after the original 29 who developed the code for wartime use.

One of the last Navajo Code Talkers, who helped secure an Allied victory in World War II by sending crucial messages in a code based on the Navajo language, has died.

John Kinsel Sr., one of the last remaining Navajo Code Talkers who sent coded messages for the U.S. military during WWII through their tribe's unwritten language, has died. He was 107.

John Kinsel Sr. was one of hundreds recruited during WW2 who became responsible for transmitting messages based on the Navajo's native language.

One of the last remaining Navajo Code Talkers who transmitted messages during World War II using the tribe's native language has died, according to officials.

John Kinsel Sr., one of the last remaining Navajo Code Talkers who transmitted messages during World War II based on the tribe's native language, has died. He was 107. Navajo Nation officials in Window Rock announced Kinsel's death on Saturday.