13. Kempeitai (Imperial Japan)
The Kempeitai, established in 1881, was the military police of the Imperial Japanese Army, operating as a secret police force during World War II. It was notorious for its brutal tactics, including torture, summary executions, and violent reprisals against civilians. The Kempeitai’s extensive network and methods drew comparisons to Nazi Germany’s Gestapo, as both organizations played central roles in suppressing dissent and enforcing authoritarian regimes (via warfarehistorynetwork.com).
