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TheSinyavino offensives were a series of Soviet offensives in 1941–1943 during World War II around theSinyavino Heights, east of Leningrad, to lift theSiege of Leningrad. The area was only fully liberated during theLeningrad–Novgorod offensive in January 1944.
The first Sinyavino offensive was a Soviet counterattack during the GermanEncirclement of Leningrad between 10 and 26 September 1941. It was executed by the54th Army which attacked from the east and by theLeningrad Front's 115th Rifle Division and 4th Marines Brigade which attacked from the region ofNevskaya Dubrovka in Leningrad. The 54th Army Detachment advanced some 6-10 km, but was then surrounded and nearly entirely destroyed. The Leningrad Front troops made a forced crossing over the Neva River and occupied theNeva Bridgehead, but failed to advance any further. The Commander of the 54th Army, MarshalGrigory Kulik was relieved of command for the failure.
The second Sinyavino offensive was a Soviet operation between 20 and 28 October 1941. It was again executed by the54th Army which attacked from the region south of Gaitolovo and by theNeva Operational Group which launched an attack from theNeva Bridgehead toward Sinyavino. Both attacks were unsuccessful, but significantly complicated the GermanTikhvin offensive, which occurred at the same time.
The third Sinyavino offensive was a major Soviet offensive between 19 August and 10 October 1942, with no results but with serious losses on both sides.
The fourth Sinyavino offensive, better known asOperation Iskra , was a successful Soviet offensive in January 1943 that conquered the territory north of Sinyavino and opened up a corridor between the besieged city of Leningrad and the rest of the Soviet Union. The Sinyavino Heights itself remained in German hands.
The fifth Sinyavino offensive, also known as theMga offensive (Soviet) orThird Battle of Lake Ladoga (German), was a Soviet offensive between 22 July and 25 September 1943, which made very little progress, but did succeed in conquering a substantial part of the Sinyavino Heights.
During the fifth Sinyavino offensive, there was a pause between 22 August and 15 September 1943, and therefore this battle is sometimes described as two different battles.