On October 7, 1944 that area was the only part of East Prussia completely evacuated.[38] On October 16, 1944 the Red Army reached German territory for the first time in World War II in the southern part of East Prussia near Gumbinnen, encountering German civilians and committing the Nemmersdorf massacre. After the Wehrmacht managed to reconquer large parts of the territory, the East Prussian Gauleiter Erich Koch partially conceded the requests of the Wehrmacht and gave permission to evacuate a small strip of 30 km directly behind the front line.