The peacekeepers

The peacekeepers are a special branch within the city guard called in for larger-scale conflicts. With the number of different cultures and backgrounds present in the city, conflicts aren't that unusual. It's when two former countries really disagree that it could turn very dangerous, as anything resembling a war would disrupt and destroy large parts of the city and leave both sides very wounded, as well as all third parties living closeby. To prevent such a thing from happening, the peacekeepers were formed. A branch specializing in getting in between large conflicts and, if not resolve it directly, at least make the sides stand down in favor of a diplomatic solution. The peacekeepers are the only people in the city who're allowed to use military-grade weapons and equipment, meaning they're a force to be reconned with. They're trained for all types of combat scenarios with the goal of keeping the negative effects on surrounding civilians to a minimum. The peacekeepers have only been deployed six times since the city was founded, and only twice to prevent an armed conflict between former nations. When not deployed as peacekeepers the members of the group work as ordinary city guards, mostly working in the inner city but some patrol the streets with the lower guards. They're also present every election when a new council takes power, mostly in a ceremonial manner but also to prevent anything going wrong between former and new members ever since a jealous councilmember tried to kill his replacement. The peacekeepers have their own building next to the guard tower, in the inner city for quick access, keeping them at the ready to be called in, but when working as city guards they still get their orders from the officials in the guard tower for better coordination.