Arizona State’s Laura Tohe delighted to see the Code Talkers finally getting national recognition

In her 2012 book she explains that the "Navajo Code Talkers did not have voting rights in Arizona until 1948, after WWII ended.” 

He Was Their Last Original Voice, Code Talker Chester Nez Walks On

The code talkers mission was so secretive they could not talk about it until 23 years after the war ended.

World War One: The original code talkers

When US military codes kept being broken by the Germans in WW1 a Native American tribe came to the rescue.