Zhukov didn't have to worry about KIA counts.
One of the quotes from The World at War I’ll always remember was taken from the diary of a German Officer during the early days of “Operation Barbarossa” when the Germans were rapidly advancing.
“This fight is like an elephant fighting a colony of ants. The elephant may kill millions, but ultimately the ants will overwhelm the elephant and eat him right down to the bone.”
True.
But just because it was battle to life or death.
There was not much sacreficing of soldiers as much as self-sareficing of russians to defeat and hold germans.