Matthew Martin, a member of the Navajo Nation who served as a Code Talker during World War II, died on Monday. He was 84.

Martin received a Congressional Silver Medal for his service. He used the Navajo language to transmit unbreakable codes.

Four Navajo Code Talkers have died in the past five weeks.

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Another of famed Navajo Code Talkers dies (AP 6/24)

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