In this paper, a policy recommendation based on the R&D planning methodology for the future combat systems (FCS) is presented. The interest in FCS for preparing for the future wars has been growing of late. The United States defines FCS as a network-centric warfare (NCW) method and believes that defense unmanned robots should be responsible for combat, combat support, intelligence, etc., as a key role player in FCS. The Republic of Korea (ROK) Army has also been attempting to define the concept of FCS for the ROK Army, with ROK Army Vision 2010. In particular, the ROK Army has been conducting researches about defense unmanned ground robots for FCS in the ROK Army. The ROK Army, however, has many challenges in achieving FCS, such as the country’s limited defense budget, as with the U.S. As a result, there is a need to define the original concept of FCS for the ROK Army considering South Korea’s defense budget. There is also a need to consider the kinds of defense unmanned ground robots that are required for FCS. Presented in this paper are the megatrend and top brands of defense unmanned ground robots for FCS, and a policy recommendation based on the R&D planning methodology for the ROK Army FCS.