The Siege of Budapest was a siege of the Hungarian capital city of Budapest, fought towards the end of World War II in Europe, during the Soviet Budapest Offensive. The siege started when Budapest, defended by Hungarian and German troops, was first encircled on 29 December 1944 by the Red Army. The siege ended when the city was unconditionally surrendered on 13 February 1945.
In January of 1945, the Germans launched a three part offensive codenamed Operation Konrad. Operation Konrad was a joint German-Hungarian effort to relieve the encircled garrison of Budapest.
On 1 January, Operation Konrad I was launched. The German IV.SS-Panzerkorps attacked from Tata through hilly terrain north of Budapest in an effort to break the Soviet siege. Simultaneously, Waffen-SS forces struck from the west of Budapest in an effort to gain tactical advantage. On 3 January, the Soviet command sent four more divisions to meet the threat. This Soviet action stopped the offensive near Bicske less than 20 kilometers north of Budapest. On 12 January, the German forces were forced to withdraw.
On 7 January, the Germans launched Operation Konrad II. The German IV.SS-Panzerkorps attacked from Esztergom towards the Budapest Airport. They tried to capture the airport in order to improve air supply of the city. This offensive was halted near the airport.
On 17 January, the last part of Operation Konrad was launched - Operation Konrad III. The German IV.SS-Panzerkorps and the III. Panzerkorps attacked from the south of Budapest and attempted to encircle ten Soviet divisions. This encirclement attempt failed.
Operation Spring Awakening (Unternehmen Frühlingserwachen) (6 March 1945 – 16 March 1945) was the last major German offensive launched during World War II. This offensive, also known as the Lake Balaton Offensive, was launched by the Germans in great secrecy on 6 March 1945. The Germans launched attacks in Hungary near the Lake Balaton area on the Eastern Front. This area included some of the last oil reserves still available to the Germans.
Operation Spring Awakening involved many German units withdrawn from the failed Ardennes Offensive on the Western Front including the 6th SS Panzer Army.