1944 Bulgarian coup d'état
The 1944 Bulgarian coup d'état, also known as the 9 September coup d'état (Bulgarian: Деветосептемврийски преврат, romanized: Devetoseptemvriyski prevrat), was a coup that overthrew the government of Kingdom of Bulgaria on the eve of 9 September 1944. During the Communist era, official propaganda called the coup the People's Uprising of 9 September on the grounds of the broad unrest and the Socialist Revolution as it was a turning point politically and the beginning of radical reforms towards Soviet-style socialism.
Source: Wikipedia — 1944 Bulgarian coup d'état (CC BY-SA 4.0)