This was the only operation in which the Red Army had crossed Motion_directional 6 major rivers one after another- Gornyi Tikich , Southern Bug , Dniester , Reut , Prut and Siret .

The outcome of the two battles Hostile_encounter was Bucharest being occupied Control on 19 December by the Central Powers and the Romanian and Russian forces ' retreat Escaping to Moldavia , all the way to the Siret .