Global space competitions are running high. Especially, in Northeast Asia, the most powerful countries in space domain, such as U.S. and China, are leading this race. In 2022, ROK JCS established the military space branch, which is the first step into the space domain from the view point of jointness in ROK armed forces. Before the establishment of this branch, there have been only each military service's effort.
Space is very close to national security, and one of emerging battle spaces with cyberspace, electromagnetic spectrum. They are connected to traditional battlefields, such as land, maritime and air. Without space assets, like navigation satellites, the cutting edge technology precise guided munitions are useless. In this era, in order to take a victory, multi-domain operations including space operations are important.
U.S. organized USSF as space service military branch. China formed Strategic Support Force to project military capabilities in space domain. Russia merged Space and Air Force to Aerospace Force. Japan established Space Operations squadron.
It is necessary to establish Joint Space Unit in order to integrate distributed effort to build space power. The Joint Space Unit's major space operations are Situation awareness, Counterspace, Space information support, and Space force projection. Situation awareness is the most urgent issue out of four types of operations.