The Bloody Triangle

That the greatest tank battle of World War II occurred near Kursk in 1943 is well known among enthusiasts and historians of the war. The second greatest tank battle of the war, however, was the Battle of the Bloody Triangle, the first large-scale armored struggle on the Eastern Front. The battle was fought in a triangle-shaped area encompassing 1,800 square miles in northwestern Ukraine and involved over two thousand tanks. The result mirrored that at Kursk, with one side decisively defeating the other. In this case the Germans defeated the Russians.
The road to Moscow now seemed wide open and the defeat of the Soviet Union inevitable. However, the Red Army had been able to slow down the Nazi juggernaut for a critical week at the beginning of Operation Barbarossa, ultimately giving the Soviets the time they needed to muster their considerable resources and stop the German blitzkrieg at the gates of Moscow in the dead of winter, which proved to be the high-water mark of Hitler's thousand-year Reich.
Author Victor Kamenar includes full order of battle information for both Wehrmacht and Red Army Forces along with a thorough analysis comparing and contrasting the strengths and weaknesses of the Soviet and German tanks.