#3 Red Star Belgrade (Delije)
Though the Delije (Brave) are the fans of all the teams that compete under the Red Star Belgrade Sports Society banner, they have gained a notorious reputation for their support of the football club.
The Ultra group was formed when a number of smaller groups came together in 1989 to establish a united fan base and have since gone on to ink themselves in the club’s legacy, with even a stand being named in their honour by the club.
The Delije were involved in one of the worst riots in footballing history on 13 May 1990, when they travelled to Zagreb to witness their club take on Dinamo Zagreb. With political agendas running high, especially with Croatian independence imminent, fans of both the club were involved in a long physical battle post the game.
The Delije even provided the base for the Serb Volunteer Guard, a paramilitary unit led by Arkan that participated in the Yugoslavian wars and were involved in numerous troubles and were even banned for five years in Europe.
Even today, the derby between Red Star Belgrade and Partizan Belgrade tends to a bloody affair with numerous instances of crowd violence being reported.