Nowhere in any western country, Heck, I've visited a bit of Africa and tons of south east Asia and a bit of South America and this ain't true neither for any of countries I visited.

Can you list these "many places"? One or two examples?

Brazil, the more extensive police work like patrols and crime prevention is usually done by military police.

Crime investigation is part of civilian police.

But most polpulation have contact only with military police. IS no coincident they look like this in Brazil: https://www.reddit.com/r/MilitaryPorn/comments/10r02yp/black...