Wartime collaboration in the Baltic states
Nazi collaboration occurred in every country occupied by Nazi Germany during the Second World War, including the Baltic states. The three Baltic republics of Estonia, Latvia and Lithuania, were occupied by the Soviet Union in the summer of 1940, and were later occupied by Germany in the summer of 1941 and then incorporated, together with parts of the Byelorussian Soviet Socialist Republic of the Soviet Union (modern Belarus), into the Reichskommissariat Ostland.
Source: Wikipedia — Wartime collaboration in the Baltic states (CC BY-SA 4.0)