text: Defensive Considerations in Counterinsurgency
  Figure 6-6. Organization of base command.
  BASE COMMANDER
  6-56. The mission of the base commander is to exercise command, control, and administration of the
  base and to exercise necessary control of resident and transient units not a part of the base command.
  A base commander may also be the area commander. The base commander’s responsibilities include
  establishing the overall defense organization as well as planning, preparing, and executing all defense
  measures.
  BASE DEFENSE COMMANDER
  6-57. A base defense commander is appointed to supervise the preparation of detailed defense plans
  including establishing defense sectors, conducting required training, providing for or coordinating
  logistical support, and controlling base defense operations through an operations center. As the base
  commander’s special representative, the base defense commander coordinates the planning efforts
  and operations of all elements that are to participate in the base defense.
  BASE DEFENSE ELEMENTS (FORCES)
  6-58. Three categories of elements that conduct base defenses are shown in Figure 6-7. The term
  elements is used in place of the term units, because base operations are often executed ad hoc: