 In the meantime, the Polish 2nd Regiment, with its own artillery support, took the heavily fortified Berlin Institute of Technology that was situated in the triangle between Charlottenburgerstrasse, Hardenbergstrasse and Jebenstrasse.With support by the Polish 3rd Infantry Regiment, the Soviet 66th Guards Tank Brigade (which had only 15 tanks) broke through Franklinstrasse and advanced towards the Berlin-Tiergarten station.The stronghold of the Tiergarten ("S-Bahn") station was then secured by the 3rd Infantry Regiment.