As three Red Army Fronts move on the German flanks west and south of Stalingrad, two more attack the Rzhev-Vyazma salient west of Moscow. Is it a diversion, or is Mars the twin of Uranus? Map 1: The Rzhev-Vyazma salient Map 2: Operation Mars   Historical images Workers from Moscow suburbs handing over new tanks to Soviet servicemen. Source: Commons:RIA Novosti Sources Antony Beevor, Stalingrad: The Fateful Siege 1942–1943. Penguin Books, 1998. Antony Beevor, The Second World War. London, UK: Little, Brown and Co., 2012. Geoffrey Roberts, Stalin's General: The Life of Georgy Zhukov. London, UK: Icon Books, 2012. David Glantz, Zhukov's Greatest Defeat: The Red Army's Epic Disaster in Operation Mars, 1942. Lawrence, Kansas: University of Kansas Press, 1999. Anthony Tucker-Jones, Slaughter on the Eastern Front: Hitler and Stalin’s War 1941–1945. Stroud, Gloucestershire, UK: The History Press, 2017 Sound effects by Zapsplat.