In 1944, a group of Navajo-speakers became secret weapons.

A closer look

In 1944, a group of Navajo-speakers became secret weapons. Known as Code Talkers, their native language baffled Axis codebreakers during World War II. Unlike ciphers (which are artificial codes), their everyday speech itself became an unbreakable defense. Decades later, an echo of that tactic returns in cybersecurity: blending human unpredictability into systems so machines can’t guess as easily. History repeats, but it also whispers lessons—that overlooked cultures and hidden knowledge often hold the keys to survival, even in hyper-modern battles fought with AI. So, the next time you treasure a ‘niche skill’ that feels irrelevant, remember: the world once turned the tide of a war with an underappreciated language.