-Have the military be top dogs and only called in emergencies. Police are the main forces in crime fighting here.
-When the eventual return of bank robbing happens make the military the main forces sent in to stop robbers with police backup
-In terms of items, Military should be well protected and armed. Should not be pushed over by criminals (although, don't make them insanely OP). They should be equipped with flash bangs and some other weapons (mainly guns, some sort of melee weapon if acceptable). Maybe be equipped with multi-tools to keep up with people who also use them
-Most recruits should be at the very least be decent at PvP
-Recruits should be punished harshly if they abuse their power, e.g a small balance removal via court case
-To stop abuse of items have some sort of /duty so players cant hoard and steal military items
-Restricted military base: This may be hard to pull off as it would require many recruits to be active to guard it (Maybe have a robbing feature similar to the bank were you can steal weapons/armour?)
-No restriction on killing people, e.g someone assaults you in duty. Obviously not allowed to kill innocents
-Military training camps. Could include a shooting range etc