During WW2, the US military made good use of many [code talkers][1] who spoke in languages the enemy was highly unlikely to understand, most famously Navajo.

Discussions about this often mention that the Japanese did the same using speakers of Kagoshima-ben, a famously impenetrable dialect:

> A local legend claims that this is intentional, so spies from elsewhere couldn't understand it, and this was even put to the test: while the American army employed Navajo codetalkers during World War II, the Japanese navy recruited fast-talking Kagoshima-ben speakers! ([Wikivoyage][2])

> As I recall the Japanese used Kagoshima-ben, an almost incognate dialect famously hard to grok even among the Japanese, to encrypt messages ([History.SE][3])

However, I've been unable to find any reliable sources affirming this.

So, **did a Japanese military unit ever employ Kagoshima/Satsugu-ben talkers, and if yes, which unit(s) and where?**

  [1]: https://en.wikipedia.org/wiki/Code_talker
  [2]: https://en.wikivoyage.org/wiki/Kagoshima_(prefecture)
  [3]: https://history.stackexchange.com/questions/33481/why-were-navajo-code-talkers-used-during-ww2