Even the ex-Japanese soldiers that participated in horrific war crimes got to live a peceful life afte the war.
Did Russia, Japan or China chase out their war criminals to the same extent? I doubt it.
Haven’t seen it yet but The Emperor's Naked Army Marches On is an ‘87 doc about a Japanese WWII vet tracking down Japanese war criminals, confronting them and then beating the shit out of them. Here’s Bill Hader talking about it: