This United States Army manual, Army Techniques Publication ATP 5-0.2-1 Staff Reference Guide Volume I Unclassified Resources December 2020, provides staff members with a reference guide to assess, plan, prepare, and execute operations in large-scale combat operations. The guide provides a consolidated location for key planning tools and example techniques to help staff members perform their duties. Most of this guide's content is contained in other, more in-depth doctrinal publications, which are referenced within each topic. Army Techniques Publication ATP 5-0.2-1 Staff Reference Guide Volume I Unclassified Resources December 2020 is applicable to all members of the Army profession: leaders, Soldiers and Army Civilians. The principal audience are staff members serving on battalion, brigade, or division staffs. Trainers and educators throughout the Army will also use this publication.