- FM 3-11Publication
Chemical, Biological, Radiological, and Nuclear Operations
FM 3-11 is the Army's overarching CBRN manual. It covers how units assess, protect against, and mitigate CBRN threats and hazards, and how CBRN capabilities support countering weapons of mass destruction. The April 2025 edition supersedes the May 2019 version.
- ATP 2-01.3Publication
Intelligence Preparation of the Operational Environment
ATP 2-01.3 is the staff process for evaluating terrain, weather, civil considerations, and the threat in a specific operational environment. The 2019 edition renamed the process from intelligence preparation of the battlefield to intelligence preparation of the operational environment, and the posted file now incorporates change 3, dated May 2025. It is a whole-staff product, not just an S2 product.
- 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 3-0Publication
Operations
FM 3-0 is the Army's capstone operations manual: how Army forces contribute landpower to the joint force and integrate joint capabilities on land. The March 2025 edition builds on multidomain operations and focuses on large-scale combat against a peer threat. If you are on a division or corps staff, this is the manual you argue from.