SMFLS6:The Sustainment & Multifunctional Logistics SMARTbook, 6th Ed. (Operational & Tactical Level Sustainment Operations) has been completely updated for 2025. SMFLS6 topics and references include the sustainment warfighting function (ADP 4-0); sustainment operations (FM 4-0), sustainment at echelon -- theater (ATP 4-93), field army and corps (ATP 4-92), division (ATP 4-91), and brigade (ATP 4-90); sustainment execution (logistics, financial management, personnel services, & health services support); sustainment planning; joint logistics (JP 4-0); deployment & redeployment (ATP 3-35); and more than a dozen additional new/updated Army sustainment references.