This document provides a summary of the 3rd edition of the United Nations Medical Support Manual for United Nations Field Missions. It outlines the structure and contents of the manual, which is intended to serve as a standard reference for medical support in UN peacekeeping operations. The manual contains chapters on the medical organization at UN headquarters, medical structures in field missions, planning and deployment of medical support, levels of medical care and eligibility for reimbursement, health care policies and procedures, and compensation for injuries sustained in service. It aims to strengthen oversight and provide operational and procedural guidelines to ensure efficient, timely and responsive medical support for UN peacekeepers globally.