reference on navajo … appears the code talkers used na-dene family dialect that was unwritten … https://en.wikipedia.org/wiki/Code_talker
more from .gov source … https://www.archives.gov/education/lessons/code-talkers
NMUSAF Offical Info
Abandoned Military Bases
75th Anniversary Special Event in Dayton
On April 18, 1942, 80 men achieved the unimaginable when they took off from an aircraft carrier on a top secret mission to bomb Japan. These men, led by Lt. Col. James H. “Jimmy” Doolittle, came to be known as the Doolittle Tokyo Raiders.
Today, just one of the men survive: Lt. Col. Richard “Dick” E. Cole, who served as Doolittle’s co-pilot on Crew Number 1. Cole, now 101 years old, plans to return to the National Museum of the U.S. Air Force in April to commemorate the 75th anniversary of the raid and to pay tribute to fellow Raider SSgt. David Thatcher, who passed away in 2016.
Grimes Field and Champaign Avation Museum
WWII – Eniga
“Breaking German Navy Ciphers” Project (2012)
Dayton Code Breakers
Visit Living History
NMUSAF – Come Visit Dayton
Gun Control Nazis vs. Jews