What system supports tactical operations through a common picture of Army activities?

The system that supports tactical operations by providing a common picture of Army activities is known as GCCS-A, which stands for Global Command and Control System-Army. This system plays a critical role in enhancing situational awareness and operational effectiveness by integrating data from various operational environments.

GCCS-A allows for real-time sharing of information among units, commanders, and other entities involved in military operations. This unified view is essential for decision-making processes, enabling commanders to assess resources, plan movements, and respond effectively to changing conditions on the battlefield.

In contrast, the other systems mentioned may serve different purposes within military operations but do not specifically focus on providing a common operational picture in the same comprehensive way that GCCS-A does. For example, AMDWS focuses on air and missile defense, while CDS and TAIS might relate to specific automation or strategic functions, lacking the broad tactical integration offered by GCCS-A. Thus, the strength of GCCS-A lies in its ability to support extensive coordination and situational awareness in tactical scenarios.