Doctrine provides a military organization with unity of effort and a common philosophy, language, and purpose. This manual discusses the organization and operations of the theater army headquarters, including its role as the Army Service component command (ASCC) to the geographic combatant commander (GCC) and the relationships between the theater army headquarters and the theater enabling commands. The manual also discusses theater army responsibilities for setting the theater, Title 10 functions and responsibilities, generally referred to as the combatant commander's daily operations requirements, as well as the operational employment of the theater army's contingency command post (CCP) to directly mission command limited types of operations. FM 3-93 serves as a guide for organizing the theater army headquarters and its command posts, for training the staff, and conducting operations as directed by the combatant commander. FM 3-93 applies to the Active Army, the Army National Guard (ARNG)/Army National Guard of the United States (ARNGUS), and the United States Army Reserve (USAR) unless otherwise stated. This publication is most applicable to theater army commanders and staff. It also provides relevant information regarding theater army organization and operations for commanders and staffs at subordinate theater level commands and brigades, GCC, and other Service headquarters. The organizational figures and associated staffing levels are derived from the Chief of Staff of the Army approved theater army design, and may vary to some degree from individual theater army modified tables of organization and equipment (MTOEs). The personnel staffing levels are provided for reference only and are not intended to provide a justification for adjusting staffing levels for MTOEs or Tables of Distribution and Allowances (TDAs). The approved theater army design 5.4 does not include augmentation TDAs, which vary significantly from one theater army to another and include both military and civilian personnel.
