This document outlines the philosophy and principles of police service and organization in the Philippines National Police (PNP). It discusses the basic police mission to preserve order and enforce laws. It also describes the different types of police organizational structures and functions, including line functions like patrol and criminal investigation, and staff functions that support line functions. Finally, it explains the key elements and principles of police organization, including specialization, hierarchy of authority, chain of command, and the principles of unity of objectives and organizational efficiency.