ADP 3-90 governs the conduct of Army offensive and defensive operations and the tactics used in land operations.
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ADP 3-90 covers tactical fundamentals, operational and mission variables, echelons, warfighting functions, and defeat mechanisms. It addresses offensive and defensive operations, enabling operations, control measures, planning considerations, and transitions.
Applies to: ADP 3-90 applies to the Active Army, Army National Guard/Army National Guard of the United States, and United States Army Reserve unless otherwise stated.
Successful operations require commanders and subordinates to manage accepted risk, exercise initiative, and act decisively even when the outcome is uncertain. (paragraph 1-44)
Friendly force agility further mitigates risk in tactical operations. (paragraph 1-47)
ADP 3-90 standardizes the lexicon commanders use to describe the conduct of offensive, defensive, and supporting enabling operations. (paragraph 3-0)
While an operations primary element is offense, defense, stability, or defense support of civil authorities, different units involved in that operation may be conducting different types and subordinate variations of operations. (paragraph 2-6)
A warfighting function is a group of tasks and systems united by a common purpose that commanders use to accomplish missions and training objectives (ADP 3-0). (paragraph 2-10)