text: Corps Roles, Functions, and Organizations
  expeditionary combat aviation brigade; air defense artillery brigade; civil affairs brigade; CBRN operations
  brigade; EOD group; psychological operations battalion; USAF support; Army space support team; military
  history detachment; mobile public affairs detachment; cyberspace and electromagnetic activities forces; and
  special operations forces. These forces can be attached, OPCON, or TACON to the corps.
  4-64. A corps tailored for major operations may have three to five Army divisions, numerous functional and
  multifunctional brigades, separate brigades and various detachments and smaller units. A corps receives
  direct support from the signal and air defense brigades commanded by the theater signal command and Army
  air and missile defense command, respectively. The corps commander uses the brigades under corps
  command to reinforce subordinate divisions and to conduct shaping operations for subordinate units. These
  brigades also support the corps as a whole. A corps ESC, enabled by other theater level assets, provides
  sustainment support. Depending on the situation, a corps may receive direct or general medical support from
  an additional medical brigade under MEDCOM (DS).
  Combat Aviation Brigade
  4-65. A combat aviation brigade is organized and equipped to synchronize the operations of multiple aviation
  battalions simultaneously to support corps or division operations. The commander can reorganize a combat
  aviation brigade in response to the situation. It can provide tailored support to adjacent, supported maneuver
  commanders at the BCT and below. The combat aviation brigade commander is normally the senior Army
  aviation officer in the corps or division structure, and advises adjacent and higher echelon commanders on
  manned and unmanned aviation system employment.
  4-66. The combat aviation brigade provides a corps or division commander with a maneuver advantage that
  can overcome the constraints of limiting terrain and extended distances. Attack, reconnaissance, utility, and
  cargo aircraft may maneuver independently under corps or division control in the deep area or in an assigned
  AO. Alternatively, the combat aviation brigade’s attack, reconnaissance, utility, and cargo assets may be
  under OPCON, TACON, general support, or direct support to another brigade as situationally appropriate.
  Furthermore, a combat aviation brigade may receive OPCON of ground maneuver forces to conduct security
  or reconnaissance operations or to accomplish other economy of force missions. The use of aviation assets
  requires additional detailed planning and synchronization using specific airspace control processes to
  maximize results. (See FM 3-04 for additional information on Army aviation operations.)
  Expeditionary Combat Aviation Brigade
  4-67. The expeditionary combat aviation brigade is a multifunctional unit designed to air assault maneuver
  forces; position personnel, supplies, and equipment; evacuate casualties; conduct personnel recovery; and
  provide command and control. When task-organized with an attack reconnaissance battalion or attack
  reconnaissance squadron, expeditionary combat aviation brigades also provide accurate and timely
  information collection; provide reaction time and maneuver space; and destroy, defeat, disrupt, or delay
  enemy forces. (See FM 3-04 for additional information on Army aviation operations.)
  Air Defense Artillery Brigade
  4-68. Air defense artillery brigades are structured to perform several functions supporting the Army air and
  missile defense commands and designated GCC. Air defense artillery brigade functions include command
  and control activities, integration, planning, and liaison with joint, higher echelon units, and subordinate
  battalions. Air defense artillery brigades are the force providers for the Army air and missile defense
  commands, meeting the commander’s air and missile defense objectives. Air defense artillery brigades, both
  Regular and Reserve Component, must be prepared to integrate a mix of Regular and Reserve Component
  forces. Air defense artillery brigades are generally aligned under the AAMDC and deployed to control the
  fires of subordinate units. Each brigade consists of a headquarters, brigade staff, and its subordinate
  battalions.
  4-69. Air defense artillery brigades deploy early to protect aerial ports of debarkation, seaports of
  debarkation, early arriving forces, and critical supplies, in accordance with the JFC’s initial defended asset
  list. As a lodgment expands, air defense artillery forces may reposition to better protect critical assets,
  communications, transportation, and maneuver forces. Air defense artillery brigades and any available joint