text: Generating and Applying Combat Power
  Corps
  The corps is the most versatile echelon above brigade due to its ability to operate at both the tactical
  and operational levels. While it is organized, staffed, trained, and equipped to fight as a tactical formation,
  the corps may be called upon to become a joint and multinational headquarters for conducting operations.
  When operating as the senior Army headquarters under a joint task force (JTF), the corps will serve as the
  ARFOR. The corps can also serve as the coalition forces land component commander (CFLCC) when
  properly augmented with joint and multinational personnel. If the corps is uncommitted to specific CCDR
  requirements, it focuses on building and sustaining readiness to prevail in large-scale combat operations. The
  roles of the corps include acting as the—
  (cid:122) Senior Army tactical formation in large-scale combat, commanding two to five Army divisions
  together with supporting brigades and commands.
  (cid:122) ARFOR (with augmentation) within a joint force for campaigns and major operations when a field
  army isnot present.
  (cid:122) JTF headquarters (with significant augmentation) for crisis response and limited contingency
  operations.
  (cid:122) CFLCC (with significant augmentation) commanding Army, Marine Corps, and multinational
  divisions together with supporting brigades and commands when a field army is not present.
  During large-scale combat operations, a corps headquarters normally functions as a tactical
  headquarters under a joint or multinational land component. The corps is the echelon best positioned and
  resourced to achieve convergence with Army and joint capabilities. (See FM 3-94 and ATP 3-92 for more
  information about Army corps.)
  Division
  The division is the Army’s principal tactical warfighting formation during large-scale combat
  operations. Its primary role is to serve as a tactical headquarters commanding brigades. A division conducts
  operations in an AO assigned by its higher headquarters—normally a corps. It task-organizes its subordinate
  forces according to the mission variables to accomplish its mission. A division typically commands between
  two and five BCTs, a mix of functional and multifunctional brigades, and a variety of smaller enablingunits.
  The division is typically the lowest tactical echelon that employs capabilities from multiple domains to
  achieve convergence during large-scale combat operations. Winning battles and engagements remains the
  division’s primary purpose. During limited contingencies, it can organize itself to serve in multiple roles. The
  roles of the division include acting as a—
  (cid:122) Tactical headquarters.
  (cid:122) ARFOR headquarters (with significant augmentation).
  (cid:122) CFLCC (with significant augmentation).
  (cid:122) JTF headquarters (with significant augmentation).
  (See FM 3-94and ATP 3-91for more information about Army divisions.)
  Brigade Combat Teams
  A BCT is the Army’s primary combined arms, close-combat maneuver force. BCTs maneuver against,
  close with, and destroy enemy forces. BCTs seize and retain key terrain, exert constant pressure, and break
  the enemy’s will to fight. They are the principal ground maneuver units of a division or a JTF. Divisions seek
  to employ BCTs in mutually supporting ways to the greatest extent possible. However, BCTs must be capable
  of fighting isolated from higher echelon headquarters and adjacent units during periods of degraded
  communication and when operations are widely distributed.
  There are three types of BCT: the infantry BCT, the armored BCT, and the Stryker BCT. Depending
  on the tactical situation, these three types of organizations are augmented with additional Army and joint
  capabilities to help them accomplish their missions. (See FM3-96for more information on Army BCTs.)