Soviet Forces

Vyborg–Petrozavodsk Offensive begin 1944

At the Karelian Isthmus front there were on average 120 Red Army artillery pieces for every kilometer, with up to 220 artillery pieces per kilometer on the breakthrough sector at Battle of Valkeasaari. In addition to heavy coastal artillery of the Leningrad area and the guns of the capital ships of the Baltic Fleet (Oktyabrskaya Revoluciya, Kirov, Maxim Gorky) Stavka had also assigned heavy siege artillery (280 to 305 mm) to support of the attack.