This research report suggested ① the necessity of introduction of K-Mosaic Warfare, ② the concept of operation execution, ③ the development direction of doctrine and unit structure to realize it. First, it is necessary to introduce a new warfare method that can respond to the North Korean hybrid warfare. Second, it is necessary to develop the operational concept to achieve superiority in all areas. Third, the interoperability of the alliance and our strategic value may be re-evaluated depending on whether or not the Mosaic Warfare, which is the US concept of future warfare, is adapted. The operational concept of the K-Mosaic Warfare ① creates an operational environment for decision-centered warfare based on collaboration between humans and machines, ② quickly combines and recombines small-scale joint forces dispersed in multiple areas, breaking away from the concept or independent operations for each service, ③ It can be summarized as carrying out integrated joint operations in all areas. First, in the field of doctrine, the K-Mosaic Warfare concept has a status as a new military system, and should play a role in suggesting a new operational doctrine and direction for organizational formation. Second, in the field of unit structure, the Joint Chiefs of Staff controls up to crisis management and presents the creation of a mosaic joint unit operated as a theater reserve in wartime.