Heeresgruppe Weichsel
Three companies of V-2 guards arrived at the German Ninth Army HQ on the Oder river in early March, 1945. Simultaneously, three companies of Hetzer panzerjäger from the 560th SS Tank Destroyer Battalion, which had been used for training purposes, were sent to join Army Group Vistula on the Oder front. General Theodor Busse, Ninth Army's commander, decided to form these troops into a "Kampfgruppe" which could be used as a mobile reserve.