Law enforcement is one of the oldest fields in the world, asmany ancient civilizations included some type of policing force. Inmodern America, the role of the police is to see that laws areupheld and justice is served, and this can be done in a variety ofways.In smaller towns, the duties of a cop may vary widely, as asingle department may suffice for the entire population. However,most cities have jobs that are highly specialized. Some policeofficers may spend most of their time at a desk poring overevidence, while others may spend most of their time responding tocalls in a squad car.From humble traffic cops to police chiefs, the structure of thepolice is carefully regimented so that each officer answers tosomeone. Having things highly organized helps to prevent corruptionand allows everyo