text: Chapter 1
  1-2. Mission variables,categories of specific information needed to conduct operations,help to determine
  the task organization and required augmentation for the IBCT.For example,if additional tactical mobility—
  the ability of friendly forces to move and maneuver freely on the battlefield relative to the enemy
  (ADP3-90)—is required,thehigher tactical headquarters can temporarily augment the IBCT with aviation
  assets to conduct air movements or air assault operations (see FM 3-99). Augmentation can include wheeled
  assets such as the mine-resistant ambush protected family of vehicles (see ATP 3-21.10).
  1-3. The role of the IBCT is to close with the enemy by means of fire and movement to destroy or capture
  enemy forces, or to repel enemy attacks by fire, close combat, and counterattack to control land areas,
  including populations and resources. Fire and movementis the concept of applying fires from all sources
  to suppress,neutralize,or destroy the enemy,and the tactical movement of combat forces in relation
  to the enemy (as components of maneuver applicable at all echelons). At the squad level, fire and
  movement entails a team placing suppressive fire on the enemy as another team moves against or
  around the enemy.
  1-4. The IBCT performs complementary missions to SBCTs and ABCTs. The IBCT optimizes for the
  offense against conventional,hybrid,and irregular threats in severely restrictive terrain. The IBCT performs
  missions such as reducing fortified areas,infiltrating and seizing objectives in the enemy’s rear,eliminating
  enemy force remnants in restricted terrain, and securing key facilities and activities. The IBCT conducts
  stability operationstasks in the wake of maneuvering forces.
  1-5. IBCTs configure for area defense and as the fixing force component of a mobile defense. The IBCT’s
  lack of heavy combat vehicles reduces its logistic requirements. Not having heavy combat vehicles gives
  higher commanders greater flexibility when adapting various transportation modes to move or maneuver the
  IBCT. Airborne IBCTs conduct airborne assault-specific missions. All IBCTs can conduct air assault
  operations. (SeeFM 3-99 for information on airborne and air assault operations.)
  1-6. The IBCT is a combined arms force organized around dismounted Infantry. Cavalry, field artillery,
  engineer, intelligence, signal, sustainment, and CBRN reconnaissance units are organic to the IBCT (see
  figure 1-1). Unique to the IBCT is the weapons company in each Infantry battalion, composed of four
  mounted assault platoons and provides those battalions with the capability to defeat light enemy armor threats
  with organic mounted tube launched, optically tracked, wire guided/wireless guided Improved Target
  Acquisition System, M2 series heavy machine gun, and MK-19 40-millimeter (mm) grenade machine gun
  weapon systems (see paragraph 1-9). Higher commanders augment the IBCT for a specific mission with
  additional capabilities. Augmentation can include aviation,Armor,field artillery,air defense,military police,
  civil affairs,a tactical PSYOP element,engineers,CBRN,and additional information systems assets. Three
  Infantry battalions and the Cavalry squadron serve as the IBCT’s primary maneuver forces.