Dinamo București was founded on 14 May 1948, when Unirea Tricolor MAI, newly entered in January 1948 under the umbrella of the Communist regime's Internal Affairs Ministry, merged with Ciocanul București. The sporting club represented the above-mentioned institution. The "Dinamo" name was used for the first time on 1 May 1948. Nevertheless, the real debut of Dinamo was in the 1947-48 Divizia A edition, finishing eighth. The squad included Ambru, Angelo Niculescu, Teodorescu, Șiclovan, Bartha, and Sârbu. In 1955, Dinamo achieved its inaugural league championship. With Angelo Niculescu as head coach, Dinamo had a strong offensive power, with an attack formed by Ene I, Neaga and Suru. The defense, with players like Băcuț I, Băcuț II, Szökő, Călinoiu, was the best in the championship, with only 19 goals conceded.