- ATP 4-90Publication
Brigade Support Battalion
ATP 4-90 covers the organization and employment of the brigade support battalion: how it is structured, how it supports a brigade combat team, and how the brigade support area is run. The January 2026 edition supersedes the June 2020 version. It is the working reference for BSB staffs and for maneuver planners who need to understand their support.
- ADP 4-0Publication
Sustainment
ADP 4-0 is the Army's foundational sustainment publication. It covers the elements of sustainment -- logistics, financial management, personnel services, and health service support -- and the principles that govern them. The March 2026 edition sets the framework that FM 4-0 and the rest of the 4-series fill in.
- FM 4-0Publication
Sustainment Operations
FM 4-0 is the Army's manual for planning and executing sustainment operations at echelon. It carries the detail behind ADP 4-0: how sustainment units are organized, how support is planned, and how the force is sustained through large-scale combat. The March 2026 edition is one of the newest publications in the Army's doctrine library.