Military General Governorate of Serbia

The Military General Governorate of Serbia (German: Militärgeneralgouvernement Serbien, MGG/S for short) was a military administration established by the Austro-Hungarian Army during the Austro-Hungarian occupation of Serbia. The Governorate was formally established on 1 January 1916 during World War I. Along with Bulgarian occupied Serbia, it was one of the two separate occupation zones created after the Kingdom of Serbia was invaded and partitioned by the Central Powers.

Source: Wikipedia — Military General Governorate of Serbia (CC BY-SA 4.0)