Operation Spring Awakening was the last major German offensive of World War II. The operation was referred to in Germany as the Plattensee Offensive and in the Soviet Union as the Balaton Defensive Operation. It took place in Western Hungary on the Eastern Front and lasted from 6 March until 15 March 1945. The objective was to secure the last significant oil reserves still available to the European Axis powers and prevent the Red Army from advancing towards Vienna. The Germans failed in their objectives.