BTS, currently the world’s most successful pop group.South Korean men must perform compulsory military service once they turn 28, if they haven’t done so already. Two of the members of the group, Jin and Suga, will soon turn 28 – Jin’s birthday is on 4 December – meaning their time with the group was under threat.The law change, though, has extended the maximum age to 30 for those allowed to defer their service.