Battle in soviet union during which German forces froze or starved to death?

The battle you are referring to is likely the Siege of Leningrad, which lasted from September 1941 to January 1944. German forces encircled the city, leading to severe shortages of food, fuel, and medical supplies. As a result, many soldiers and civilians suffered from starvation and freezing conditions, with estimates of hundreds of thousands to over a million casualties during the siege. The resilience of the Soviet defenders and the eventual lifting of the siege marked a significant turning point in World War II.