text: Chapter 2
  OPERATIONAL-LEVEL COMBAT POWER CONSIDERATIONS
  No army can be efficient unless it be a unit for action; and the power must come from
  above, not below.
  Lieutenant General William T. Sherman
  2-44. Commanders and staff at all echelons must understand and master both the art of command and the
  science of control to apply operational art. Understanding an OE and its problems, determining an operation’s
  end state, establishing objectives, and sequencing an operation in broad terms are part of operational art.
  Many aspects of operations, such as movement rates, fuel consumption, weapons effects, and unit
  capabilities, are quantifiable. They are part of the military science that enables operational art. Effectively
  generating and applying combat power not only requires an understanding of operational art, but it also
  requires a detailed understanding of military science.
  2-45. Combat power is the total means of destructive, constructive, and information capabilities that a
  military unit or formation can apply at a given time (ADP 3-0). Combat power has eight elements: leadership,
  information, command and control, movement and maneuver, intelligence, fires, sustainment, and protection.
  The Army collectively describes the last six elements as warfighting functions—a group of tasks and systems
  united by a common purpose that commanders use to accomplish missions (ADP 3-0). Commanders apply
  combat power through the warfighting functions using leadership and information guided by the principles
  of mission command as shown in figure 2-4.
  Figure 2-4. Elements of combat power
  2-46. Combat power includes all capabilities provided by joint forces and other unified action partners that
  are integrated and synchronized to achieve objectives and accomplish missions. All echelons generate and
  apply combat power. Theater and field armies (when constituted) tend to focus on generating combat power
  and allocating resources to corps and divisions. Corps and division headquarters tend to focus on
  synchronizing and applying combat power to accomplish tasks and achieve objectives. The remainder of this
  section provides considerations for the generation and application of combat power at the operational and
  higher tactical levels.