The Moldavian Soviet Socialist Republic entered the Second World War along with the entire Soviet Union.
The main blow fell on it from Romania, which, with the support of the Third Reich, occupied Bessarabia and the area between the Southern Bug and Dniester rivers. The territories occupied by the Romanians became part of Great Romania, and returned under the control of the Soviet Union only in 1944 during the Jassy-Kishinev operation - one of the most successful Soviet operations during the Great Patriotic War, one of the "ten Stalinist strikes".