[4] Origins of both Red Star and Partizan are found in political institutions of the post-World War II Communist Yugoslavia.

Red Star was formed on 4 March 1945 by the United Alliance of Anti-Fascist Youth, part of the new civil authority in Yugoslavia.

[5] SK Jugoslavija was disbanded in 1945 by the new Communist authorities with its property nationalized and most of it signed over to the newly-formed Red Star.

On the other hand, BSK was allowed to continue its existence by the new authorities; after successive name changes, the club came to be known as OFK Beograd since 1957, losing its relevance to the newly-founded Partizan in the process.

Red Star has won 2 international, 2 regional and 66 domestic trophies, making them the most successful football club in Serbia and the former Yugoslavia.

Supporters of the various Red Star sports teams are known as Delije (Serbian Cyrillic: Делије, roughly translated to English as Heroes).

The name Delije first began to be used by hardcore Red Star supporters during the late 1980s, with official inauguration taking place on 7 January 1989.

The origin of the nickname itself is uncertain, but an accepted theory is that it was given by their biggest rivals, the Red Star fans, referring to club's mostly black colours which were similar to the uniforms of cemetery undertakers.

During the 1970s the Grobari started bringing fan equipment to the stadiums such as supporting scarves, signs, banners and flares.

By the 1980s the Grobari were one of the four main fan groups in SFR Yugoslavia and began touring all Partizan's matches across the country and Europe.

Because of their expressed hooliganism toward other clubs' supporters in those times, fans who represented the core of the Grobari firm were often called among themselves "Riot Squad".