- 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.
- AR 750-1Publication
Army Materiel Maintenance Policy
AR 750-1 sets Army maintenance policy: the two levels of maintenance, services and inspections, and the standards a commander is held to for equipment readiness. It is the policy behind the motor pool. The 29 April 2026 major revision supersedes the 2 February 2023 edition, and DA PAM 750-1 now carries the associated procedures.
- ADP 3-0Publication
Operations
ADP 3-0 is the Army's capstone description of how it conducts operations. The March 2025 edition carries multidomain operations as the Army's operational concept and supersedes the July 2019 edition. It sets the vocabulary -- warfighting functions, combat power, the operational framework -- that nearly every other doctrinal publication uses.
- FM 5-0Publication
Planning and Orders Production
FM 5-0 is the Army's reference for planning: the military decision-making process, troop leading procedures, Army design methodology, and the formats for plans and orders. If you have ever needed the five-paragraph OPORD format at midnight, this is the book. The November 2024 edition supersedes the 16 May 2022 version and the posted file incorporates change 1, dated August 2025.