FM 3-0 — Operations
Field Manual 3-0 is the Army's keystone warfighting manual — describing how Army forces conduct operations across the range of military operations, from competition through large-scale combat, using the Multi-Domain Operations framework.
Current edition: 21 March 2025
Questions are based on this version. If your copy shows a newer date, let us know — we'll update the question bank.
Multi-Domain Operations (MDO) framework, five domains (land/air/maritime/space/cyberspace), three MDO phases (competition/armed conflict/return to competition), decisive action (offense/defense/stability), large-scale combat operations, combined arms, eight elements of combat power, six warfighting functions, unified land operations, mission command seven principles, MDMP seven steps, TLP eight steps, five-paragraph OPORD, IPB four steps, four forms of reconnaissance, five forms of security, risk management, and consolidation of gains.
FM 3-0 is the foundation of Army warfighting doctrine. Boards ask about MDO, the five domains, decisive action, and the MDMP. Knowing that competition is a phase of MDO — not just peacetime — and that large-scale combat operations are the most demanding form of warfare shows the doctrinal depth that separates you at a senior board.
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