The Kempeitai were the military police of the Japanese Imperial Army. Literally translated, the name means “Law Soldier Regiment.” Westerners of 1930s generally called them “gendarmerie”
https://nationalinterest.org/blog/buzz/kempeitai-japan%E2%80%99s-had-its-very-own-dreaded-%E2%80%9Cgestapo%E2%80%9D-26436