The Chief of Police is a peace officer and must execute all processes directed to them by any magistrate of this State in criminal matters. They may make arrests for breach of peace or commission of crime within the limits of the City with or without a warrant as peace officers do under the laws of this State. They must exercise a vigilant control over the peace and quiet of the City. They will exercise such additional powers as may be conferred upon them by the ordinances of the City to enable them to carry out the objects and purposes of this Charter.