There must have been more than one tribe of Indians involved in "code talking", and not just in the Pcific.
World War II Magazine, Jan-2002, devotes eight pages to an article entitled, THE LAST COMANCHE CODE TALKER", which relates to the experiences of Charles Joyce Chibitty, of Oklahoma (I deduce that his trabal name was Wah che taki).
Recuited at Fort Sill, OK, he and 16 other future "code talkers" were trained at Fort Benning, GA, then sent to Europe with the 4th Infantry Division, where their service was invaluable. They landed with the division on Utah Beach, 6-6-44, D-Day.
They stayed together from the time they went into the Army, Jan-41, until war's end, May-45. Of the 17, four were wounded in action, but none were killed. Upon returning home, they remained close friends.
The division was in combat 299 days, participating in these campaigns:
Normandy (D-Day), Northern France, Rhineland, Ardennes-Alsace (Battle of the Bulge), Central Europe.
It experienced these casualties:
Killed in Action, 4,097 Wounded in Action, 17,371 Died from Wounds, 757
In an author's footnote, it is explained that the name CHIBITTY is an Americanized version of Tsaa pitu, which means "holding on" in Comanche.
An interesting story and history.
I am a subscriber to WW II, but is is at the book stores at $4.99 US. Wonderful general reference source.