 Complete the following phrase:  In January 1945, as part of the VistulaOder Offensive, his armor provided heavy fire support for the units advancing into Poland, where they reduced the fortresses guarding the inner approaches into the country, and helped them in the capture of the cities of Łódź, Kutno, and Poznań. By the end of the month, Babadzhanians corps had reached the borders of Germany and begun military operations to take Landsberg, Tczew, Wejherowo, and a host of other towns in Pomerania. As part of the 1st Belorussian Front, on February 2, the 11th Tank Corps crossed the Oder and, with artillery and air support, and took part in the capture of Frankfurt an der Oder. His forces arrived in time to take part in the battle for 