This Regulation implements DoD Directive 4140.1 and establishes requirements and procedures for DoD materiel managers and others who need to work within or with the DoD supply system. This Regulation provides materiel management guidance for: Developing materiel requirements based on customer expectations while minimizing the DoD investment in inventories; Selecting support providers on the basis of best value; Determining how best to position and deliver materiel to satisfy highly variable readiness and combat sustainment needs in a variety of unique and demanding environments; and, Executing other supply chain functions and programs, some of which are unique to the Department.