Which system provides a common operational picture for command units?

The correct choice, which identifies the system providing a common operational picture for command units, is MCWS/CPOF. This system is designed to facilitate situational awareness and decision-making within military command structures by integrating data from various sources. The primary function of MCWS (Mission Command Web System) and CPOF (Command Post of the Future) is to create a comprehensive visualization of the battlefield environment. This allows commanders and their units to share critical information, coordinate operations, and respond effectively to dynamic situations.

The other systems listed serve different purposes within military operations. GCCS-A (Global Command and Control System-Army) focuses on enabling command and control capabilities by integrating information from various domains, but it is not specifically about providing that common operational picture in the same way MCWS/CPOF does. TAIS (Tactical Airlift Information System) is related to airlift operations rather than creating a command operational picture. CDS (Common Display System) provides visualization tools but does not offer the same level of integration and operational picture as MCWS/CPOF. Therefore, MCWS/CPOF clearly stands out as the system aimed at delivering a common operational picture for command units.