In June 1944, the division was sent to the
Karelian Front to take place in an operation aimed at clearing
Karelia of Finnish forces. The attack started on June 21, 1944, with the 100th Guards Rifle Division performing a force-crossing of the
Svir River. After three days of violent attacks, Finnish defenses were overrun and the
Leningrad Oblast completely liberated. The offensive resumed shortly afterwards, and had to pass through the former
Mannerheim Line, reinforced between 1941 and 1944. Taking heavy casualties, the division advanced north and arrived to the shore of Vidlitsa river on July 1, 1944. A day later, the river was crossed in force and the division resumed its offensive. However, it was stopped three days later by another river coupled with extensive defensive fortification. After yet another assault crossing and heavy fight, the offensive stopped on July 14, 1944, and the division assumed a defensive stance until mid-August. The operation lasted in total for 40 days, with the division advancing more than 200 kilometers starting from its initial positions around
Leningrad. The Svir River, crossed in force by the division, would later give its name to the unit. In August 1944, the division was relocated to
Kalinin and renamed the 100th Guards Svir Airborne Division, only to be renamed back to 100th Guards Svir Rifle Division a few months later. After receiving reinforcements and a new commander, Major General
Ivan Alekseevich Makarenko, the division was transported to Hungary in January 1945 and integrated into the
9th Guards Army's
39th Guards Rifle Corps. Starting from mid-February, the division was part of the Soviet reserve force during the German
Operation Frühlingserwachen, east of
Lake Balaton, in which the 6th SS Panzer Army was trying to get through Soviet defenses. On March 16, 1945, the Wehrmacht's offensive was stopped, and an offensive on
Vienna was launched immediately afterwards. The 100th Division had the task of "cleaning up" encircled pockets of German resistance. On April 2, 1945, the division started its march towards Vienna. Five days later, the troops arrived within sight of Vienna, which was turned into a fortress defended by the II SS Panzer Corps and
ad hoc training and anti-aircraft units. The operation aimed at capturing Vienna started on April 7, 1945. The division occupied the southern outskirts of the city, and then executed an enveloping maneuver westwards, going around the city through the Vienna woods, engaging in heavy combat in the center of the city, seizing key targets such as the railway terminal and the parliament, and force-crossing the
Danube. After five days of violent urban warfare, Vienna fell on April 13, 1945. By early May, the division was committed to the offensive towards Prague, still in the hands of the Wehrmacht. It crossed the Czech border on May 10, meeting American forces advancing from the west. ==Post-war==