[3] They received the field of SK Srpski mač for use from the Belgrade municipality.
[4] Jedinstvo became one of the most important clubs in Belgrade during the pre-1945 period, right along BSK, SK Jugoslavija and BASK.
[5] Due to the reduction of the number of clubs in the league from 12 to 6, it did not participate in the 1939–40 season which was the last before the beginning of the Second World War that would lead to the creation of a separate Croatian and Serbian Championships.
As result, in 1940–41 a so-called Serbian League was played with Jedinstvo finishing in 4th place.
With the intensification of the war, and the following change of regime, the club ended up being disbanded in 1945.