Each soldier's service and sacrifices were remembered on Monday.
The main event took place in the evening at the War Memorial of Korea in central Seoul.
Kan Hyeong-woo went to check it out and files this report.
This year's Armed Forces Day event began with a ceremonial performance by a guard of honor... and traditional music from a military band.
Held at night for the first time, this year's ceremony was carried live by a number of national broadcasters.
Seoul's top office had decided that more people would be able to watch the event in the evening and appreciate the service of South Korea's military.
After soldiers put on a Taekwondo performance... to multiple rounds of applause, The military displayed its future combat systems such as the Army's warrior platform... and the dronebots and unmanned battle machines of the Navy and Air Force.
To audience's delight, South Korea's famous aerobatic team, the "Black Eagles," also put on a special air show.
In order to minimize the participation of active-duty service members, whose preparation would've taken months, the government invited world famous K-pop star, Gangnam Style's very own Psy.
""South Korea's defense ministry chose not to show off its military arsenal with a large parade. Instead, this year's ceremony was more in line with the current peace-building atmosphere on the Korean Peninsula.
Kan Hyeong-woo, Arirang News."
