This United States Army, Marine Corps, Air Force Multi-Service Tactics, Techniques, and Procedures manual, Army Techniques Publication ATP 3-07.31 Multi-Service Tactics, Techniques, and Procedures for Peace Operations Change 1 July 2025, establishes tactics, techniques, and procedures for planning and conducting peace operations (PO) at the tactical and operational levels. It also provides resources and references for training personnel and units assigned to a PO mission. PO include crisis response and limited contingency operations. Frequently, PO involve international military missions to contain conflict, restore peace, and shape the strategic environment to support reconciliation and rebuilding, and facilitate the transition to legitimate governance. PO are conducted under the sponsorship of the United Nations (UN), other international organizations, or within a coalition of agreeing nations, but may be conducted unilaterally. PO include conflict prevention, peacemaking processes, peace enforcement operations, peacekeeping operations, and peace building. PO are conducted with various diplomatic activities necessary to secure a negotiated truce and resolve a conflict.