This publication provides doctrine for religious affairs in joint operations. It also provides information on the chaplain's roles as the principal advisor to the joint force commander (JFC) on religious affairs and a key advisor on the impact of religion on military operations. It further provides information on the chaplain's role of delivering and facilitating religious ministries in joint operations. Chaplains have always been an integral part of the US military. US military chaplaincies are characterized by interfaith structure and pluralistic cooperation. The role of chaplaincies is to accommodate religious needs, to support welfare and morale, and to help the command understand the complexities of religion with regard to its personnel and mission. The Constitution, law, and policy support the free exercise of religion. Title 10, United States Code (USC), provides for the appointment of officers as chaplains in the Military Departments. Chaplains have rank without command, and dual roles as religious leader and staff officer. Military commanders are responsible to provide for the free exercise of religion of those under their authority. Religious affairs in joint military operations will require a variety of actions supporting different types and phases of operations. There are many types of activities that commanders conduct outside of combat operations. Before, during and after combat operations, consistent with their noncombatant status and with the law of armed conflict, chaplains may be involved in planning and coordinating pastoral presence; caring for the wounded and honoring the dead; advising on appropriate chaplain liaison in support of military operations; ensuring the JFC and staff understand the constraints and restraints related to the noncombatant status of chaplains; coordinating for RST replacements. This publication establishes doctrine and guidance for the Armed Forces of the United States regarding religious affairs in the joint force environment and joint operations. It describes the major responsibilities and functions of the joint force commander, joint force chaplain, enlisted religious support personnel and religious support teams regarding religious affairs in joint force settings and operations.