^That's basically the standard Army uniform of the period with due branch-insignia differences.
And the jitte was the characteristic truncheon of Edo period police, it poofed from authority arsenals with Meiji. Imperial Japanese cops just had batons and swords plus guns for certain special units.
The military police of course had far more leeway in hardware but you can pretty much assume sword here - compare.
As for the rep, well. You know what a jolly bunch of murdering rapists the IJ military was 'round those days? Well these dipshits were their very own internal Gestapos except with even less oversight than usual for period totalitarian terror police (not in the least because the country was essentially run by a dysfunctional military junta that couldn't agree on anything) so, yeah. Historians tend to use phrases like "extremes of torture and repression" around them.
Non-Japanese ones anyway, because Japanese ones that do so run a very real risk of getting shanked by some ultranationalist nutter.