The 1944 Bulgarian coup d'état, also known as the 9 September coup d'état, was a coup that overthrew the government of Kingdom of Bulgaria carried out on the eve of 9 September 1944. During the People's Republic of Bulgaria it was called using the propaganda term People's Uprising of 9 September – on the grounds of the broad unrest and Socialist Revolution – as it was a turning point politically and the beginning of radical reforms towards Soviet-style socialism.

The Bulgarian Land Forces are the ground warfare branch of the Bulgarian Armed Forces. It is administered by the Ministry of Defence, previously known as the Ministry of War during the Kingdom of Bulgaria. The Land Forces were established in 1878, when they were composed of anti-Ottoman militia (opalchentsi) and were the only branch of the Bulgarian military.