In World War 2, the US Marines needed to communicate securely on the battlefield. So they turned to soldiers from the Navajo tribe who developed a code based on their language. Show more
Discover 11,128,835 listings and 280,509 playable programmes from the BBC
In World War 2, the US Marines needed to communicate securely on the battlefield. So they turned to soldiers from the Navajo tribe who developed a code based on their language. Show more