Army Techniques Publication ATP 3-57.30 Civil Affairs Support to Nation Assistance provides doctrine for the integration of Civil Affairs operations (CAO)/civil-military operations (CMO) into the operations process. The manual provides techniques and procedures for CAO planning, training, and execution of missions in support of nation assistance (NA). The intent is to establish a common foundation for Civil Affairs (CA) forces to apply their unique skills in support of United States (U.S.) objectives to promote long-term stability, pluralistic government, and sound democratic institutions in the host nation (HN). The ATP prescribes the programs included within the joint concept of NA operations: foreign internal defense (FID), security assistance (SA), and Title 10, United States Code (10 USC), Armed Forces, programs and activities. This manual also provides a generic CAO appendix to act as a guide in developing supporting documentation for operational plans (OPLANs). NA operations support the HN with the technical expertise, advice, and assistance that can exponentially influence the success of other ongoing programs and initiatives. ATP 3-57.30 elaborates on doctrine contained in Field Manual (FM) 3-57, Civil Affairs Operations. The principal audience for ATP 3-57.30 is the Army Civil Affairs force, officers, and noncommissioned officers who support joint and Army forces or serve on the staffs that support those commanders of operations at all levels of war. It is also an applicable reference for the interagency. It provides techniques and procedures for the conduct of NA operations, one of the five core tasks of CAO. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable U.S., international, and, in some cases, HN laws and regulations. Commanders at all levels ensure their Soldiers operate in accordance with the law of war and the rules of engagement. ATP 3-57.30 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both the glossary and the text. For other definitions shown in the text, the term is italicized and the number of the proponent publication follows the definition. ATP 3-57.30 applies to the Active Army, Army National Guard / Army National Guard of the United States, and United States Army Reserve (USAR) unless otherwise stated.