text: Chapter 6
  JOINT FORCIBLE ENTRY OPERATIONS
  6-87. Forcible entry is the seizing and holding of a military lodgment in the face of armed opposition or
  forcing access into a denied area to allow movement and maneuver to accomplish the mission (JP 3-18). A
  forcible entry operation may be the JFC’s opening move to seize the initiative. Forcible entry operations may
  be used to conduct operational movement and maneuver to attain positional advantage or as part of a
  deception.
  6-88. Commanders design their forcible entry operations to seize and hold a lodgment against armed
  opposition. A lodgment is a designated area in a hostile or potentially hostile operational area that, when
  seized and held, makes the continuous landing of troops and materiel possible and provides maneuver space
  for subsequent operations (JP 3-18). This requires friendly forces to be combat loaded and prepared for
  immediate combat operations prior to their arrival on the ground in the lodgment area. A force defends the
  perimeter of a lodgment until it has sufficient forces to break out and conduct offensive operations.
  CONDUCT LARGE-SCALE COMBAT OPERATIONS
  6-89. During large-scale combat operations, Army forces conduct offensive, defensive, and stability
  operations to defeat enemy forces. Defeat of enemy forces in close combat is normally required to achieve
  campaign objectives and national strategic goals after the commencement of hostilities. Divisions and corps
  are the formations central to the conduct of large-scale combat operations, as they are organized, trained, and
  equipped for the deep, rear, and support operations that enable subordinate success during close combat. The
  ability to prevail in ground combat is a decisive factor in breaking an enemy’s will to continue a conflict.
  Conflict resolution requires the Army to conduct sustained operations with unified action partners as long as
  necessary to achieve national objectives. Section II and Section III of chapter 6 describe how Army forces,
  as part of a joint force, conduct defensive and offensive operations during large-scale combat.
  SUSTAIN LARGE-SCALE COMBAT OPERATIONS
  6-90. Large-scale combat operations require greater sustainment than other types of operations. Their high
  tempo and lethality significantly increase maintenance requirements and expenditure of supplies,
  ammunition, and equipment. Large-scale combat incurs the risk of mass casualties, which increase
  requirements for health service support, mortuary affairs, and large-scale personnel and equipment
  replacements. Large-scale combat operations demand a sustainment system to move and distribute a
  tremendous volume of supplies, personnel, and equipment. (See FM 4-0 for more information on
  sustainment.)
  6-91. Army sustainment is a key enabler of the joint force on land. Army forces provide sustainment to other
  elements in the joint force according to the direction of the JFC. The JFC has the overall responsibility for
  sustainment throughout a theater, but the JFC headquarters executes many of its sustainment responsibilities
  through the TSC. When directed, Army sustainment capabilities provide the bulk of Army support to other
  services through executive agency, common-user logistics, lead Service, and other common sustainment
  resources. (See JP 4-0 for more information on joint sustainment. See ADP 4-0 for more information on the
  Army sustainment roles and responsibilities.)
  6-92. Capabilities from other domains enable sustainment of Army forces. Air sustainment capabilities
  provide responsive sustainment for high priority requirements. Maritime-enabled sustainment supports large-
  scale requirements. Space- and cyberspace-enabled networks facilitate rapid communication of sustainment
  requirements and precise distribution.
  6-93. Successful sustainment operations strike a balance between protecting sustainment capabilities and
  providing responsive support close to the forward line of troops. A well-planned and executed logistics
  operation permits flexibility, endurance, and application of combat power. Plans must anticipate and mitigate
  the risk posed by enemy forces detecting and attacking friendly sustainment capabilities. Sustainment
  formations pursue operations security, survivability, and protection with the same level of commitment as all
  other forces. While most rear and support operations are economy of force endeavors when allocating combat
  power in divisions and corps, the continuity and survivability of those operations are vital to deep and close
  operations.