 Complete the following phrase:  In late August the division was withdrawn to the front reserve with the 5th Shock Army. The army and the division were withdrawn to the Reserve of the Supreme High Command on 5 September and in late October joined the 1st Belorussian Front, being relocated to the Magnuszew bridgehead. As part of the shock group of the army, the division played an active role in the Warsaw-Poz offensive, during which it reached the Oder and captured a bridgehead northwest of Kustrin after breaking through German defenses. Seryugin was evaluated as having skillfully commanded the division during these operations and in the Berlin Offensive, during which the division was part of the main shock group that broke through the fortified defenses in the Battle of the Seelow Heights and fought its way into the city during the 