I think the Navajo Tribe. Was Navajo Tribe in the Chickasaw Nation?
When all else fails check Wiki. Lol
https://en.m.wikipedia.org/wiki/Chickasaw_Nation
Regardless the tenth circuit is where both men are from. Am sure they’ve known each other awhile. Good men no doubt.
Found this
The name code talkers is strongly associated with bilingual Navajo speakers specially recruited during World War II by the Marines to serve in their standard communications units in the Pacific Theater. Code talking, however, was pioneered by the Cherokee and Choctaw peoples during World War I.
I really should read up on the Native Americans. It was a closed door in my home. NOT to be talked about.
It was Navajo, but also Choctaw, so maybe there were others too.