More than 100,000 fans turned out to see K-pop superstars BTS’s first concert in nearly four years, their label said Sunday, a smaller number than originally expected for the highly anticipated event in central Seoul. The seven-member group took to the stage together for the first time following a years-long hiatus prompted by mandatory military service, with some stationed near the heavily fortified border with North Korea.

Korean pop band, BTS, has announced plans for its seven members to enlist in South Korea’s military. This was made known in a statement shared by the group’s management company, Big Hit Music, via Twitter on Monday.