The Civil Protection, also known as the "metro cops" and "CPs", is the police force responsible for law enforcement of all Combine citizens on Earth, including City 17. the officers are called by Resistance members as CPs when referring to them. The Overwatch Voice uses the term "Protection" and "Protection Teams" when referring to Civil Protection.

While being part of the Combine Overwatch, Civil Protection officers are ordinary human volunteers who have "willingly" joined the Combine. Civil P