The police are a civil public intermediary that regulates order and law. Police officers as state servants must uphold humanitarian values ??and be an example for society. As stated in the oath and promise of members of the Indonesian National Police. This is stated in the opening of the code of ethics of the Indonesian National Police profession. According to Law Number 2 of 2002 concerning the Indonesian National Police. The function of the police is one of the functions of the state government in the field of maintaining public security and order, law enforcement, protection, shelter, and service to the community. The problem raised is the working relationship between police function units in disclosing criminal acts at the Medan Helvetia Police. The method used in discussing the formulation of the problem is normative legal research. Normative legal research is an approach carried out based on primary legal materials by examining theories, concepts, legal principles and laws and regulations related to this research. The working relationship between the police functional units in disclosing criminal acts at the Medan Helvetia Police, namely starting from the SPKT Unit of the Medan Helvetia Police coordinating with the police functional units at the Medan Helvetia Police to conduct a crime scene check (TKP); the Samapta Unit carries out security around the house object; the Intelkam Unit conducts an investigation into the case, collects information or (Pulbaket); the Criminal Investigation Unit conducts an in-depth investigation at the crime scene; the Traffic Unit regulates traffic around the crime scene; the Binmas Unit coordinates with the Head of the Environment and local sub-district and the Samapta Unit of the Medan Helvetia Police carries out patrols in the area. Meanwhile, the factors that hinder the working relationship between the police functional units in disclosing criminal acts at the Medan Helvetia Police are external factors such as the lack of public knowledge of the importance of handling the crime scene (TKP); time factors; weather factors. While internal factors consist of being less careful or careless towards an object; lack of facilities and infrastructure for officers; quality of identification officers; facilities and infrastructure.

The existence of the police is essential in overcoming criminal acts of terrorism, because the police are structured in such a way from the regions to the center and are also in accordance with the duties and functions of the police in creating public security and enforcing the law. The problem raised in this research is: what are the steps taken by the National Police in tackling criminal acts of financing terrorism? What are the obstacles to the National Police in dealing with criminal acts of terrorism?This research is directed towards normative, or doctrinal, juridical legal research which is also referred to as library research or document study, because it is mostly carried out on secondary data in libraries. The results of the research and discussion explain the role of the National Police in overcoming criminal acts of terrorism, namely maintaining public security and order, which is a dynamic condition of society as one of the prerequisites for implementing the national development process in order to achieve national goals which are characterized by ensuring security, order and the rule of law, as well as fostering it. peace, which contains the ability to foster and develop the potential and strength of society in warding off, preventing and overcoming all forms of law violations and other forms of disturbance that can disturb society. The National Police's efforts to tackle terrorism include repressive efforts, preventive efforts and preemptive efforts. The obstacle for the National Police in tackling terrorism is that it is hampered by the synergy of cross-sectoral cooperation, namely between the police, regional government and other related agencies.