第3教育団とはなんですか？

A. 3rd Training Brigade was a JGSDF training unit that was located at Aiso-gun, Sasebo, Japan. It was dissolved on March 25, 2013.

参考URL:https://ja.wikipedia.org/wiki/%E7%AC%AC3%E6%95%99%E8%82%B2%E5%9B%A3