text: Chapter 2
  control of three to six battalions. At the field army and corps echelons, there are task-organized sustainment
  brigades attached to the ESC to provide sustainment support to Army forces and unified action partners
  conducting operations in the operational area. For additional information, see ATP 4-92.
  COMBAT SUSTAINMENT SUPPORT BATTALION
  2-85. The combat sustainment support battalion (CSSB) executes logistics operations within the theater
  Army, corps, and division echelons. It is task organized with up to six functional companies, teams, and
  detachments that execute transportation operations (mode, terminal, and movement control), maintenance
  operations, supply, and field services. CSSBs are normally attached to sustainment brigades and may be
  attached to DSBs to support division operations.
  SECTION V – OVERVIEW OF TACTICAL LEVEL OF WARFARE
  2-86. The tactical level of warfare is the level of warfare at which forces plan and execute battles and
  engagements to achieve military objectives (JP 3-0). Activities at this level focus on tactics—the
  employment, ordered arrangement, and directed actions of forces in relation to each other (ADP 3-90).
  Operational-level headquarters determine objectives and provide resources for tactical operations. Tactical-
  level commanders plan and execute operations to include battles, engagements, and small-unit actions.
  CORPS
  2-87. The corps is the Army’s most versatile headquarters. The corps functions as one of the principal
  integrators of land power into campaigns. When a field army is not present, a corps is the primary link
  between the operational and tactical levels of war. The corps is organized, manned, and equipped to serve in
  four roles:
  • Senior Army tactical formation in large-scale combat, commanding two to five Army divisions
  together with supporting brigades and commands. This is its primary role.
  • ARFOR (with augmentation) within a joint force for campaigns and major operations when a field
  army is not present.
  • JTF headquarters (with significant augmentation) for crisis response and limited contingency
  operations.
  • Joint force land component (with significant augmentation) commanding Marine Corps and
  multinational divisions together with supporting brigades and commands.
  2-88. Each corps has an assigned corps sustainment command (CSC). The CSC is the corps’ command for
  the integration and synchronization of sustainment in an operational area. The CSC headquarters is normally
  task-organized with sustainment brigades, a petroleum group, finance center, and movement control
  battalion. The CSC executes logistics support, HR, financial management, and distribution management
  operations at the operational and tactical levels of war. The CSC integrates HSS and medical logistics
  operations into the overall sustainment support concept. The CSC manages requirements through the
  coordination and synchronization of the physical flow of forces, equipment, and cargo to meet the daily
  operational needs of the tactical units. It also monitors movements throughout the assigned JOA or AO and
  identifies and resolves problems to reduce interference to distribution networks. For additional information
  on the corps and its capabilities, see FM 3-94 and ATP 4-92.
  2-89. The corps finance battalion is assigned to the corps CSC, provides command and control of two to six
  subordinate finance companies, and is responsible for conducting tactical finance operations. It has the
  flexibility to push forward tailored support packages and provide physical currency for early entry operations.
  The corps finance battalion’s primary functions include disbursing, payment support, and internal controls.
  The commander is the corps finance battalion’s primary account holder to the United States Treasury.
  DIVISION
  2-90. 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. The division is
  typically the lowest tactical echelon that employs capabilities from multiple domains to achieve convergence
  during large-scale combat operations. A division conducts operations in an AO assigned by its higher