Army Techniques Publication ATP 4-90 Brigade Support Battalion January 2026

This United States Army manual, Army Techniques Publication ATP 4-90 Brigade Support Battalion January 2026, describes the brigade support battalion's roles, characteristics, core competencies, functions, and organization in maneuver brigades, multifunctional support brigades (combat aviation brigade, field artillery brigade), functional support brigades, and multi-domain task forces. This publication is a revision of ATP 4-90 published in 2020 and aligns with FM 3-0 and FM 4-0. The updates to ATP 4-90 include the light support battalion, which provides support to mobile infantry brigades. It provides detailed information on brigade sustainment staff and brigade support battalions to include command and control and sustainment operations at the brigade echelon. This publication also discusses echeloned sustainment and the brigade support area. Supporting organizational graphics are also updated. ATP 4-90 provides doctrine for support battalion operations in maneuver brigades, multifunctional support brigades, and the multi-domain task force. It describes the role, characteristics, core competencies, and functions of these battalions. The principal audience for ATP 4-90 is commanders and staffs of maneuver brigades, multifunctional support brigades, and multi-domain task forces. Trainers and educators throughout the Army will also use this publication.