2-31. For large-scale combat operations or protracted joint operations, the theater army may be reinforced by an array of Army capabilities deployed from the United States and supporting theater armies. Other Army functional or multifunctional headquarters and units may be made available to the theater army based on requirements of the AOR, including forward stationing, base operations, security force assistance missions, theater security cooperation activities, or ongoing military operations. These Army functional or multifunctional units may have either a command or a support relationship with the theater army. In some cases, the Department of the Army tasks certain functional or multifunctional battalions to support more than one theater army. Figure 2-2 provides an example of a theater army task-organized for large-scale combat operations.