The City Watch of King's Landing is a law-enforcement institution charged with keeping the peace in King's Landing. They are informally known as "Gold Cloaks" due to the gold-colored cloaks their members wear as part of their uniform. The City Watch is supposed to double as a defense force in the event that the city is attacked.
The City Watch promotes by merit, one of the few institutions in Westeros not to recognize the status of birth. The leader of the City Watch is referred to as "Lord Commander" when of noble birth, but simply as "Commander" when not.