"Red Army Tank Commanders: The Armored Guards" is an interesting book on the six Soviet generals who commanded the six tank armies during WW2. Some were there from the beginning to the end, Katukov (1st) and Kravchenko (6th) for example. Others commanded their respective armies during their peak performances, such as Rotmistrov (5th) at Kursk.

I am a big fan of tank warfare, and the German masters were my favorites for two decades until I read this book five years ago. Kravchenko is my favorite now, and I doubt any tank commander & force can ever surpass him and his 6th Guards Tank Army. They fought in terrain no other tank unit would have fought, and covered the longest distance (both travel & fighting) of any tank unit in the war. Moscow to Vienna & Prague, all the way to Pt. Arthur on the Pacific coast.