Finnish invasion of the Karelian Isthmus

60°30′N 29°54′E / 60.5°N 29.9°E / 60.5; 29.9

Reconquest of the Karelian Isthmus
Part of the Continuation War
Military parade in Viipuri on 31 August 1941, after its recapture.
Date 31 July – 5 September 1941 (1 month and 5 days) Location Karelian Isthmus, Soviet Union Result Finnish victory
Belligerents
Finland	Soviet Union
Commanders and leaders
Erik Heinrichs Karl Lennart Oesch Taavetti Laatikainen	Markian Popov P.S. Pshennikov M.N. Gerasimov
Strength
3 Corps	3 Corps

The Finnish invasion of the Karelian Isthmus refers to a military campaign carried out by Finland in 1941. It was part of what is commonly referred to as the Continuation War. Early in the war Finnish forces liberated the Karelian Isthmus. It had been ceded to the Soviet Union on 13 March 1940, in the Moscow Peace Treaty, which marked the end of the Winter War. Later, in the summer of 1944, the Soviet Union reconquered the southern part of the isthmus in the Vyborg–Petrozavodsk Offensive.