48th Army command chose to make its main attack with the two rifle corps, reinforced with artillery and tanks, along the Kostyashevo - Kolosy sector, in the direction of Repki, Turki and Bobruisk, break through the German defense and then reach the rear of its Zhlobin group of forces, cut it off from the crossings over the Berezina and then encircle and destroy it in conjunction with the 65th Army. The Corps was specifically assigned to a 1,000m front north of the line from Kostyashevo to outside of Kolosy, backed by the 22nd Breakthrough Artillery Division, and after rupturing the German front would develop the offensive in the direction of Koshary with the aim of gaining bridgeheads over the Dobysna River by the end of the second day. When the offensive began on June 23 both corps faced the difficult task of crossing the broad, swampy floodplain of the Drut River, but after heavy fighting the leading troops managed to capture the second German trench line by 1100 hours. Fighting for the third line continued unsuccessfully until evening. The second day began with another 2-hour artillery preparation against XXXV Corps' positions at Rogachev. Following this the 399th was one of 11 rifle divisions that attacked the two shaken German divisions and by evening the shock groups had advanced west of the city. With the Germans overwhelmed the 9th Tank Corps began exploiting to the rear, gaining . By midnight on the 25th 42nd Corps was part of a force driving due west towards Bobriusk and threatening to cut off six German divisions southwest of the city. This encirclement was completed over the next two days, and overnight on June 27/28 the 48th Army launched concentric attacks with its three rifle corps (42nd Corps from the east towards Savichi) to split the pocketed force. By 1300 hours all but a small number, hiding in the city, had been killed or captured. Early on the morning of June 29 the Corps relieved units of the 3rd Army along the Vlasovichi to Titovka sector and prepared to attack Bobruisk from the northeast and east. However, reconnaissance by 356th Rifle Division discovered that the garrison had withdrawn to the city's center while a prisoner revealed that a breakout to the northwest was planned. The Corps' attack began at 0400 hours, crossing the Berezina with the help of the Dniepr Flotilla, and fighting in the