What branch of the military did Song Joong-ki serve in?

Song Joong-ki is a South Korean actor who is best known for his roles in the television series Descendants of the Sun and Arthdal Chronicles. He was also a former military serviceman who served in the Republic of Korea Armed Forces.

Song Joong-ki enlisted in the military in 2013 and completed his mandatory 21 months of service in 2015. He was a part of the National Defense Media Agency, which is the public relations branch of the Republic of Korea Armed Forces.

The National Defense Media Agency is responsible for providing public relations services to the military, such as producing press releases, managing media events and providing media coverage of military activities. Song Joong-ki's role was to appear in promotional videos and other public relations activities for the military.