This field manual (FM) addresses military police (MP) maneuver and mobility support (MMS), area security (AS), internment and resettlement (I/R), law and order (L&O), and police intelligence operations (PIO) across the full spectrum of Army operations. Although this manual includes a discussion of corps and division MP elements, it primarily focuses on the principles of platoon operations and the tactics, techniques, and procedures (TTP) the platoon uses to accomplish its mission.This FM provides the capabilities and organization of the MP, demonstrates the flexibility and diversity of MP in adapting to any mission throughout the full spectrum of Army operations, and characterizes the MP as a combat-force multiplier. Additionally, this manual identifies the fact that the Army will not conduct operations alone and defines the role of the MP in support of joint, multinational, and interagency operations. The MP TTP are organized by the MP functions of MMS, AS, I/R, LO, and PIO with supporting tasks, both individual and collective, to help illustrate the functions.