Police ranks are a structured hierarchy within law enforcement agencies that help organize personnel and define roles. Common ranks include Officer, Sergeant, Lieutenant, Captain, and Chief. Each rank has specific responsibilities, with higher ranks typically overseeing larger teams and more complex operations. The rank structure varies by country and agency, but generally, it allows for clear lines of authority and accountability. For example, a Sergeant supervises a team of Officers, while a Captain manages multiple Sergeants. This system ensures effective communication and coordination within the police force.