TIL that during the Battle of Moscow despite German forces closing to within 50 kilometers of the city the Soviet Union still held the annual military parade marking the revolution. Soviet troops who paraded past the Kremlin then marched directly to the front line and into battle.
The Biggest Battles of the Eastern Front During World War II: The Siege of Leningrad, the Battle of Stalingrad, the Battle of Moscow, the Battle of Kursk, and the Battle of Berlin – sovietology books store
Battle of Moscow - German soldiers in heavy snow west of Moscow-The temperature dropped far below freezing. On 30 November, von Bock reported to Berlin that the temperature was –45 °C (–49 °F). General Erhard Raus, commander of the 6th Panzer Division, kept track of the daily mean temperature in his war diary. It shows a suddenly much colder period during 4–7 December: from –36 to –38 °C (–37 to –38 °F)