In late 1944 and 1945, the He 111 reverted to a transport role. It helped evacuate Axis forces from Greece and Yugoslavia in October - November 1944. He 111 units also transported men and material out of Budapest, during the siege of the city, while He 111s of "Kampfgeschwader 4" assaulted Soviet bridgeheads and laid mines in the Danube to hamper the Red Army from crossing the river. The remaining He 111s withdrew from the Hungarian front after the siege ended in February 1945 to concentrate on destroying the bridges over the Oder river as the Soviet advance was nearing Berlin.