World War II: Soviet forces capture the city of Tartu, Estonia.

The Tartu offensive operation, also known as the Battle of Tartu and the Battle of Emajõgi was a campaign fought over southeastern Estonia in 1944. It took place on the Eastern Front during World War II between the Soviet 3rd Baltic Front and parts of the German Army Group North.

Tartu is the second largest city in Estonia after Tallinn. Tartu has a population of 97,759. It is 186 kilometres southeast of Tallinn and 245 kilometres northeast of Riga, Latvia. Tartu lies on the Emajõgi river, which connects the two largest lakes in Estonia, Lake Võrtsjärv and Lake Peipus. From the 13th century until the end of the 19th century, Tartu was known in most of the world by variants of its historical name Dorpat.

The Estonian Soviet Socialist Republic was an administrative subunit of the former Soviet Union (USSR), covering the occupied and annexed territory of Estonia in 1940–1941 and 1944–1991. The Estonian SSR was nominally established to replace the until then independent Republic of Estonia on 21 July 1940, a month after the 16–17 June 1940 Soviet military invasion and occupation of the country during World War II. After the installation of a Stalinist government which, backed by the occupying Soviet Red Army, declared Estonia a Soviet constituency, the Estonian SSR was subsequently incorporated into the Soviet Union as a union republic on 6 August 1940. Estonia was occupied by Nazi Germany in 1941, and administered as a part of Reichskommissariat Ostland until it was reconquered by the USSR in 1944.