These highly trained, specialized units train in some of the most grueling conditions to protect the major cities and trade routes of Planet Costellon.
For three centuries, Riot Police have been the vanguard. Quelling urban incursions by foreign powers, insurgency and even sports riots, these troops can be as deadly as they most often are nonviolent.
In modern times, they are an offshoot of the regular Civil Defense Force, and operate under the orders of the Civil Defense Command out of the local KioskHQ. (In Amani Unus' Case, that is the Central Command HQ.)
They fought alongside the army during the invasion of Amani Unus, evacuating citizens and donning their riot gear and shields to fight the invaders.
They kept order on the planet during the comet strike, and also fought for the city of Diana. These men and women also form militia for the many territories of the Interstellar Covenanted States.
In Ancerious, they are the protectors of liberty. On Edina, they are the upholders of law and order; and in the Gijion Territories, they are gatekeepers of law.
It is a common tradition in ICS culture, that when you see a uniformed Riot Officer, you hold your hand to your heart. Because only the Lord knows when they'll be called upon first to defend your homes, and second to die for them.