German occupation of Byelorussia during World War I
The German occupation of Byelorussia was a military occupation of various Belarusian regions by the Imperial German Army during the First World War (1914-1918). As one of the most western lands of the Russian Empire, Belarus was indirectly affected by war since the very outbreak of hostilities at the Eastern Front, while direct German occupation of some Belarusian regions occurred firstly in 1915, during the Great Retreat of the Imperial Russian Army.
Source: Wikipedia — German occupation of Byelorussia during World War I (CC BY-SA 4.0)