The purpose of TRADOC Pamphlet (Pam) 525-3-0, The Army Capstone Concept, Operational Adaptability-Operating Under Conditions of Uncertainty and Complexity in an Era of Persistent Conflict, is to describe the broad capabilities the Army will require in the 2016- 2028 timeframe. It describes how the Army will apply available resources to overcome adaptive enemies and accomplish challenging missions in complex operational environments. The evolving operational environment and emerging threats to national security will require continuous assessment of Army modernization. Effective modernization efforts include change across the domains of doctrine, organizations, training, materiel, leadership and education, personnel, and facilities (DOTMLPF). Capabilities, when validated and prioritized, will drive the adaptation and innovation necessary to conduct operations consistent with the ideas in the Army Capstone Concept (ACC). The ACC also establishes the foundation for subordinate concepts that will refine capabilities and identify others essential to ensuring Army combat effectiveness against the full spectrum of threats that the Army, as part of the joint force, is likely to confront in the future.