Sejny Uprising
The Sejny Uprising or Seinai Revolt (Polish: Powstanie sejneńskie, Lithuanian: Seinų sukilimas) refers to a Polish uprising against the Lithuanian authorities in August 1919 in the ethnically mixed area surrounding the town of Sejny (Lithuanian: Seinai). When German forces, which occupied the territory during World War I, retreated from the area in May 1919, they turned over administration to the Lithuanians.