Army Field Commands means all of the Department of the Army exclusive of Headquarters, Department of the Army. Army field commands include all field headquarters, forces, Reserve Components, installations, activities, and functions under the control or supervision of the Secretary of the Army.
Major Army Command is a command directly subordinate to, established by authority of, and specifically designated by Headquarters, Department of the Army. Army component commands of unified and specified commands are major Army commands.
The Theater Army Area Command (TAACOM) is organized to provide combat service support for units located in and passing through the theater zone. The TAACOM, a major subordinate command of the Theaer Army headquarters, provides DS and GS support to noncorps units, Joint elements, and allied forces as directed. Additionally, the TAACOM provides GS to the Corps and backup DS to the Corps through the TAACOM's GS units. Four other major subordinate commands of the Theater provide the balance of logistic support: Personnel Command (PERSCOM), Engineer Command (ENCOM), Transportation Command (TRANSCOM), and Medical Command (MEDCOM).Prior to the establishment of a Theater, a Corps Support Command, as part of an independent corps, will be used in controlling logistics operations. Combat service support units, organized into brigades, groups, or battalions are directly responsible to the corps support command (COSCOM) commander, who is responsible to the Corps commander for providing adequate support to the Corps. Combat service units are structured to be responsive to Corps requirements for the item and services for which they are responsible. A fixed organization is not prescribed for the Corps; hence, number and types of logistical support units are determined by the mission, combat and combat support units, availability and use of nuclear weapons, terrain and weather within the areas of operations, and composition and capability of the probable hostile forces. The Division Support Command [DISCOM] is the source of division-level logistics and HSS in the division. Although the division stresses area support, the DISCOM also provides CSS on a unit support basis and a task-support basis. The DISCOM, when augmented as required, may furnish area support to non-divisional units in the division area. Unit support is designated to a unit or units such as a maneuver brigade. In task support, the DISCOM furnishes a specific type or amount of a DISCOM element's support capability to designated units or an area to accomplish identified tasks. Communications systems are essential for gathering and disseminating data. Personnel need them to plan and execute operations. Commanders use them to perform C2 functions and to supervise performance.