In the first half of October 1943, Southwestern Front (3rd Ukrainian Front from 20 October) commanded by Army General Rodion Malinovsky was tasked with attacking the German Panther-Wotan line, and later securing the bridgeheads on the eastern bank of the Dnieper on the Izyum - Dnipropetrovsk axis during the Battle of the Lower Dnieper.
[2] At the same time the Koniev's 2nd Ukrainian Front was attacking towards the Kryvyi Rih from the north with the 7th Guards Army, but the 1st Panzer Army was saved for the moment as Koniev's assault on Kryvyi Rih stalled at Ingulets river north of Kherson.
Later, units of the 6th Army seized bridgeheads south of Zaporizhzhia, and by the end of December, along with 2nd Ukrainian Front held on the Dnieper major strategic stronghold.
In August 1944 the 3rd Ukrainian Front engaged in the Iassy-Kishinev Offensive, which resulted in the release of all the Moldavian SSR, and Romania declaring war on Germany.
The next day a Bulgarian communist led coalition organized a coup and took over the government, eventually switching sides and declaring war on Germany.
In October 1944 - February 1945, the 3rd Ukrainian Front had forces involved in the Siege of Budapest, including 46th Army.
The successful completion of this battle made possible the beginning of the Vienna Offensive on 16 March, in conjunction with the left wing 2nd Ukrainian Front.
Thereafter the front's forces completed the liberation of Hungary, expelled the enemy from the eastern part of Austria and took its capital, Vienna.