Abstract: This study describes assessment of tactical air operations for US-ROK Combined Forces Command and procedures for the planning, synchronization and execution of tactical operations in the Korean theater by the armed forces of the ROK-US combined forces command. Procedures for the integration of theater air-ground system is also studied. We study the Marine Air Command and Control System’s (MACCS’s) principal airspace control and management agency and the Marine Air Control Group’s (MACG’s) Marine Air Control Squadron (MACS) and Korean Tactical Air Control System (KTACS) for combined tactical air operations. We found the Combat Support System (CSS) hardware included a Perkin Elmer 3230 mainframe processor at the HTACC facility. And 8 work stations of Korean Air Intelligence System (KAIS) can be connected to an IBM 3299 terminal multiplexer that in turn interfaces with the IBM 3174 terminal controller. The ROKAF ADP (Automated Data Processing) for tactical air operations is associated with the High and Medium Altitude Air Defense System (HIMADS) HAWK brigades and battalions and the four TSQ-73s at the brigade level are directly connected to the MCRC ADP system over TADIL B links. And also the CONSTANT WATCH Korean Combat Support System (KCSS) incorporates an automated capability to assist in the preparation of Air Tasking Orders (ATOs). The capability of CONSTANT WATCH KCSS for tactical air operations is not in use because of the difficulties involved in its application. Instead, PC Frag has been used to prepare the ATOs and the various existing and future versions software should be carefully examined to select the most suitable software tool that is to be used by all involved.