admitted in his diary that failure was likely. Three days later, the Germans were thrown back at their original starting positions. The 1st, 2nd, 9th, and 12th SS Panzer Divisions were reduced to 31 operational armored fighting vehicles by March 15, 1945, while Army Group South as a whole retained 772 operational tanks and assault guns as of March 16, 1945. However, the German forces broke under the Soviet Red Army counteroffensive and retreated towards Austria to defend Vienna. In April 1945, the 6th Panzer Army defended Vienna against the advancing Soviets, but was unable to prevent a Soviet conquest of the city. When the war ended on May 8, 1945, the 6th Panzer Army was in Austria between Vienna and Linz, in which area it subsequently surrendered to forces of the Soviet and U.S. Armies. References Further reading Military units and formations of the Waffen-SS P6 Military units and formations established in 1944 Military units and formations disestablished in 1945