After World War I, the club became champion of the Bucharest Region and played in the final tournament of the National Championship.

In 1921–22 the club was knocked out in the semifinals by Victoria Cluj after the team from Bucharest failed to appear, so it lost the game with 0–3, by administrative decision.

Unirea, was founded in 1924, after the merging of "Orizontul" and "Zburătorii", in the same district of Obor as the above Tricolorul.

In 1947–1948, due to Communist regime norms (stating that all sports associations had to join a form of trade-union, or a governmental institution), the team is taken over by the Ministry of Internal Affairs and, on May 14, 1948, merged with another club, Ciocanul București (former Maccabi), the new teams being named Dinamo "A" and Dinamo "B".

[1] Liga I: Liga II: Romanian Cup: Ernest Hillard Mihai Ionescu, Mircea Tudoran – Fotbal de la A la Z. Fotbalul românesc de-a lungul anilor, București, Editura Sport-Turism, 1984 [3]