Where does “ゲシュタポ” come from?

ゲシュタポ (Japanese) comes from German Gestapo, from German Geheime Staatspolizei — secret state police.

Ancestry of “ゲシュタポ”, step by step

Step	Language	Word	Meaning
1	German	Gestapo	Nazi secret police
2	German	Geheime Staatspolizei	secret state police

ゲシュタポ — Etymology, Origin & Word History | Etymology Explorer