United States Government US Army
Published: 2018-04-10
Total Pages: 48
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This publication, Army Techniques Publication ATP 3-90.20 Regional Support Group, provides the regional support group (RSG) doctrine. This publication aligns and nests with joint and Army doctrine. To comprehend the doctrine contained in this publication, readers must first understand the nature of unified land operations as described in JP 3-0 and ADRP 3-0. In addition, readers must fully understand the fundamentals of the operations process contained in ADRP 5-0, the principles of mission command described in ADRP 6-0, the execution of defense support of civil authorities discussed in ADRP 3-28, the protection tasks discussed in ADRP 3-37, and the base camp life cycle described in ATP 3-37.10.In addition, readers should understand ADRP 1, The Army Profession, in order to understand the organization and doctrinal principles of the Army Profession and know how the moral principles of the Army Ethic apply to all operations, decisions, and actions. The principal audience for ATP 3-90.20 is commanders and staffs at all echelons and RSGs primarily tasked with conducting base camp management, base security and defense operations, and joint reception, staging, onward movement, and integration. Army civilians, trainers, educators, and contractors will also use this publication. Leaders and staff sections within units that employ a RSG or may operate under a RSG also use this publication. Furthermore, unified action partners and higher headquarters commanders and staff use this publication to guide their actions on RSG employment. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable U.S., international, and in some cases, host-nation laws and regulations. Commanders at all levels ensure their Soldiers operate in accordance with the law of war and the rules of engagement. See FM 27-10. ATP 3-90.20 uses joint terms where applicable. Selected joint and Army terms and definitions appear in the glossary and the text. Terms for which ATP 3-90.20 is the proponent publication (the authority) are italicized in the text and are marked with an asterisk (*) in the glossary. Terms and definitions for which ATP 3-90.20 is the proponent publication are boldfaced in the text. For other definitions shown in the text, the term is italicized and the number of the proponent publication follows the definition. ATP 3-90.20 applies to the Active Army, Army National Guard/Army National Guard of the United States, and U.S. Army Reserve, and Army Civilian Corps, unless otherwise stated.