The army became part of the 2nd Ukrainian Front on 20 September. From 6 October, the army fought in the Battle of Debrecen. On 8 October, the army attacked with three mobile columns north of Belgrade. 10th Guards Rifle Corps attacked through Vršac and cleared Pančevo by 5 October against weak opposition. The 10th Guards Rifle Corps advanced on Belgrade from the north and northeast. The 31st Guards Rifle Corps advanced through the Voivodina and advanced toward Petrovgrad and the Tisza. 37th Rifle Corps advanced from Timișoara towards Kikinda, destroying elements of the 4th SS Polizei Panzergrenadier Division and Hungarian forces. It advanced towards Szeged and Senta, providing the front's main fighting force in its advance from the south. On the night of 10–11 October, the army captured Szeged. From the end of October, the army fought in the Budapest Offensive. The army was selected to advance towards Budapest through Kecskemét. Kecskemet fell to the army on 1 November. On 1 December, the army included the 10th Guards Rifle Corps (including the 49th, 86th and 109th Guards Rifle Divisions), the 23rd Rifle Corps (including the 68th Guards, 99th and 316th Rifle Divisions) and the 37th Rifle Corps (including the 59th Guards, 108th Guards and 320th Rifle Divisions). The 180th Rifle Division was also part of the army. The 7th Breakthrough Artillery Division provided artillery support for the army. It included the 11th, 9th Guards and 17th Light Artillery Brigades, 25th Howitzer Artillery Brigade, 105th Heavy Howitzer Artillery Brigade and 3rd Mortar Brigade. The 45th Guards Light Artillery Brigade, 92nd Guards Corps Artillery Regiment, 12th and 24th Fighter Anti-Tank Artillery Brigades, 437th Fighter Anti-Tank Artillery Regiment, and 462nd Mortar Regiment provided the rest of the army's artillery support. The 38th Anti-Aircraft Artillery Division was also part of the army and included the 1401st, 1405th, 1709th and 1712th Anti-Aircraft Artillery Regiments. The 991st, 1505th and 1897th Self-Propelled Artillery Regiments and 51st Engineering Brigade provided self-propelled artillery and sapper capability to 46th Army.Combat composition of the Soviet Army, 1 December 1944
