This Army tactics, techniques, and procedures (ATTP) manual provides doctrinal guidance and procedures that will enhance the delivery of human resources (HR) support in brigade and battalion S-1 sections. It will help HR leaders to guide actions and provide procedures to enable decision making. This publication is nested with Field Manual (FM) 1-0, Human Resources Support, and provides overarching doctrinal guidance and direction for conducting S-1 operations. ATTP 1-0.1 promotes a common understanding of HR support fundamentals at battalion, brigade, or brigade equivalent level S-1 sections throughout the Army Force Generation (ARFORGEN) cycle. This manual, along with FM 1-0, provides sufficient information to allow for execution of all required HR missions and functions dictated by current operational requirements and anticipated future actions. ATTP 1-0.1 provides the doctrinal base for developing operations plans (OPLANs) and associated standing operating procedures (SOPs). Leaders and HR operators at all levels must apply these fundamentals using the military decision-making process (MDMP); troop leading procedures; and mission, enemy, terrain and weather, troops and support available, time available, civil considerations (METT-TC). This publication is an authoritative guide that requires judgment in application. ATTP 1-0.1 was previously published as Field Manual Interim 1-0.1 to address the Army's HR transformation concept and the transition to Personnel Services Delivery Redesign (PSDR), which transferred and consolidated HR functions at brigade and battalion-level. This transition supported Army transformation from large, powerful fixed organizations, typically a division, to a brigade-centric design based on smaller, more self-contained organizations. Likewise, the S-1 structure was enhanced to support S-1 operations throughout all force pools of ARFORGEN, and S-1s now have the capabilities and resources to plan, coordinate, and execute all HR support core competencies and their subordinate key functions and tasks. HR transformation will impact S-1 sections as strategic objectives, structures, and processes change. These changes include-Reshaping HR processes and business practices; Using technology to apply a relevant, reliable, and achievable multi-component HR system; Realigning Army HR structures to meet needs and capabilities; Revising doctrine and training to integrate best practices and lessons learned; Delivering and executing HR service functions as close to Soldiers as possible; Continuing to build on the ability to provide support from home station. While the focus of this manual is on S-1 sections assigned to modified table of organization and equipment (MTOE) units, it also applies to tables of distribution and allowances (TDA) organizations and the support agencies (Installation Management Command [IMCOM]). IMCOM HR support to MTOE units in garrison is limited. Regardless of the type of organization or whether the unit is deployed or not deployed, providing effective and efficient HR support relies on trained HR professionals at all levels that can coordinate necessary HR support when needed.