Marine Corps Tactical Publication (MCTP) 3-03B, Multi-Service Tactics Techniques, and Procedures for Peace Operations supports planners and warfighters by establishing tactics, techniques, and procedures (TTP) for training, planning, and conducting joint or multi-Service peace operations (PO). It serves as the focal point guiding readers to existing TTP and provides TTP where gaps exist. It is also designed to bridge the gap between operational and tactical-level PO tasks. This publication offers readers a basic understanding of joint and multinational PO, an overview of the nature and fundamentals of PO, and a detailed discussion of selected military tasks associated with PO. MCTP 3-03B provides references to other United States, United Nations, and nongovernmental resources and, to a limited extent, training objectives to enable for commanders and their staffs to properly execute PO.