* Lithuania was part of the Russian Empire at the start of the war.
* German forces occupied Lithuania in 1915 and remained there until the end of the war.
* The Lithuanian Council declared Lithuania's independence on February 16, 1918.
* The Lithuanian Wars of Independence (1918-1920) were fought between Lithuania and Soviet Russia, Poland, and Germany.
* Lithuania achieved de facto independence in 1920.
World War II (1939-1945)
* Lithuania was occupied by the Soviet Union in 1940.
* Germany invaded the Soviet Union in 1941 and occupied Lithuania until 1944.
* The Soviet Union reoccupied Lithuania in 1944 and remained there until the dissolution of the Soviet Union in 1991.
-The January Uprising (1863–64): Lithuanian partisans took part in a general uprising against Russian imperial rule.
-The Lithuanian–Soviet War (1918–1919): The newly independent Lithuania fought against the Russian SFSR and the Belorussian SSR, ultimately securing Soviet recognition of Lithuanian statehood.
The Polish-Lithuanian War (1919–1920): Lithuania and the Second Polish Republic fought over control of the Vilnius Region, which was eventually annexed to Lithuania in 1920.
-The Interwar Period (1919–1939): Lithuania enjoyed a period of peace and relative prosperity, which ended with the Soviet occupation in 1940.