ADP 3-90, page 3

*ADP 3-90 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. *This publication supersedes ADP 3-90, dated 13 August 2018. i Army Doctrine Publication No. 3-90 Headquarters Department of the Army Washington, DC, 31 July 2019 OFFENSE AND DEFENSE Contents Page PREFACE.................................................................................................................... iii INTRODUCTION .......................................................................................................... v Chapter 1 TACTICAL FUNDAMENTALS.................................................................................. 1-1 Tactics ....................................................................................................................... 1-1 The Tactical Level of Warfare.................................................................................... 1-1 The Art and Science of Tactics ................................................................................. 1-2 Solving Tactical Problems ......................................................................................... 1-4 Hasty Versus Deliberate Operations ......................................................................... 1-5 Risk ............................................................................................................................ 1-6 Chapter 2 COMMON TACTICAL CONCEPTS AND ECHELONS ............................................ 2-1 Joint Interdependence ............................................................................................... 2-1 Principles of Joint Operations .................................................................................... 2-1 Operational Variables ................................................................................................ 2-1 Mission Variables ...................................................................................................... 2-2 The Army’s Tactical Doctrinal Taxonomy .................................................................. 2-2 Warfighting Functions ................................................................................................ 2-2 Defeat Mechanisms ................................................................................................... 2-4 Basic Tactical Concepts ............................................................................................ 2-4 Forms of Maneuver and Forms of the Defense....................................................... 2-17 Echelons .................................................................................................................. 2-17 Chapter 3 THE OFFENSE ......................................................................................................... 3-1 Purposes of the Offense ............................................................................................ 3-1 Characteristics of the Offense ................................................................................... 3-1 Types of Offensive Operations .................................................................................. 3-3 Common Offensive Control Measures ...................................................................... 3-3 Common Offensive Planning Considerations ............................................................ 3-7 Transition ................................................................................................................. 3-18 Chapter 4 THE DEFENSE ......................................................................................................... 4-1 Purposes of the Defense ........................................................................................... 4-1 Characteristics of the Defense .................................................................................. 4-1 Types of Defensive Operations ................................................................................. 4-3 Common Defensive Control Measures ..................................................................... 4-4 Common Defensive Planning Considerations ........................................................... 4-7 Transition ................................................................................................................. 4-18